qid int64 1 74.7M | question stringlengths 15 58.3k | date stringlengths 10 10 | metadata list | response_j stringlengths 4 30.2k | response_k stringlengths 11 36.5k |
|---|---|---|---|---|---|
114,392 | I have two Ghost 14 backups of my machine. One for the machine fully configured with apps after and XP install and one of the last update before i re-imaged it (it's XP, I re-image about once every six months). I recently wanted to try simply using my initial image in a virtual environment to do my testing that general... | 2010/02/28 | [
"https://superuser.com/questions/114392",
"https://superuser.com",
"https://superuser.com/users/23312/"
] | **SphereXP** - the world's number one three-dimensional desktop.
**[YODM 3D](http://yodm-3d.uptodown.com/en/)** - Virtual Desktop Manager featuring the Cube 3D effect
**[Matodate](http://madotate.en.softonic.com/)** - ... | You should try the best: [BumpTop](http://bumptop.com/).
It's been recommended a lot! |
45,942,074 | I am a new user to Android Studio. I have a zip packed from Udacity that I am trying to open/run in Android Studio. The package is here - [Starter Code Zip File](https://d17h27t6h515a5.cloudfront.net/topher/2017/April/58e82999_firebase-analytics-green-thumb-android/firebase-analytics-green-thumb-android.zip "Starter Co... | 2017/08/29 | [
"https://Stackoverflow.com/questions/45942074",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/8533181/"
] | “Please select Android SDK” is a problem with the configuration not with the project.
In some updates from android studio you can see this problem.
Solution:
```
File -> Settings -> Android SDK -> Android SDK Location Edit -> Android SDK
``` | This was driving me nuts in Android Studio 3.0.1 on Windows 10. Fixed by:
1. Updating the USB driver for the device (Windows: Device Manager -> SAMSUNG Android Phone -> SAMSUNG Android ADB Interface and right-click to "Update Driver" and...
2. Android Studio: Tools -> Android -> Tick "Enable ADB Integration"
I am ver... |
45,942,074 | I am a new user to Android Studio. I have a zip packed from Udacity that I am trying to open/run in Android Studio. The package is here - [Starter Code Zip File](https://d17h27t6h515a5.cloudfront.net/topher/2017/April/58e82999_firebase-analytics-green-thumb-android/firebase-analytics-green-thumb-android.zip "Starter Co... | 2017/08/29 | [
"https://Stackoverflow.com/questions/45942074",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/8533181/"
] | “Please select Android SDK” is a problem with the configuration not with the project.
In some updates from android studio you can see this problem.
Solution:
```
File -> Settings -> Android SDK -> Android SDK Location Edit -> Android SDK
``` | please change your versionCode or versionName in Gradle.Build and Sync.
after sync, you will able to run and you can change the previous version again. |
45,942,074 | I am a new user to Android Studio. I have a zip packed from Udacity that I am trying to open/run in Android Studio. The package is here - [Starter Code Zip File](https://d17h27t6h515a5.cloudfront.net/topher/2017/April/58e82999_firebase-analytics-green-thumb-android/firebase-analytics-green-thumb-android.zip "Starter Co... | 2017/08/29 | [
"https://Stackoverflow.com/questions/45942074",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/8533181/"
] | “Please select Android SDK” is a problem with the configuration not with the project.
In some updates from android studio you can see this problem.
Solution:
```
File -> Settings -> Android SDK -> Android SDK Location Edit -> Android SDK
``` | try to sync `build.gradle`
**OR**
```
Tools -> Android -> Sync Project with Gradle
```
If still not working then restart android studio... |
63,764,426 | I came across something this morning which made me think...
If you store a variable in Python, and I assume most languages, as x = 0.1, and then you display this value to 30 decimal places you get: '0.100000000000000005551115123126'
I read an article online which explained that the number is stored in binary on the c... | 2020/09/06 | [
"https://Stackoverflow.com/questions/63764426",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/10443133/"
] | Well, as a physicist I say these decimals are redundant in most cases.. it really doesn't matter what's on the 16th decimal place. The precision of measurements doesn't reach that level (not even in QED). [Take a look at here](https://physics.stackexchange.com/questions/497087/what-is-the-most-precise-physical-measurem... | There is the [decimal](https://docs.python.org/2/library/decimal.html) class in python that can help you deals with this problem.
But personally, when I work with money transactions, I don't want to have extra cents like 1€99000012. I convert amounts to cents. So I just have to manipulate and store integers. |
63,764,426 | I came across something this morning which made me think...
If you store a variable in Python, and I assume most languages, as x = 0.1, and then you display this value to 30 decimal places you get: '0.100000000000000005551115123126'
I read an article online which explained that the number is stored in binary on the c... | 2020/09/06 | [
"https://Stackoverflow.com/questions/63764426",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/10443133/"
] | As always, it depends on the context (sorry for all the "normally" and "usually" words below). Also depends on definition of "scientific". Below is en example of "physical", not "purely mathematical" modeling.
Normally, using computer for scientific / engineering calculations:
1. you have reality
2. you have an analy... | There is the [decimal](https://docs.python.org/2/library/decimal.html) class in python that can help you deals with this problem.
But personally, when I work with money transactions, I don't want to have extra cents like 1€99000012. I convert amounts to cents. So I just have to manipulate and store integers. |
55,242,248 | In my view, I have an ajax behavior with a listener that updates a bean property and then an "oncomplete" action that executes a javascript method
This is the ajax event:
```html
<p:ajax event="rowDblselect" listener="#{backController.onRowDoubleClick}"
oncomplete="openNewTab()" ... | 2019/03/19 | [
"https://Stackoverflow.com/questions/55242248",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1387275/"
] | The resources load balancer and the virtual machine scale set are the associated relationship. What you can do is add the virtual machine scale set into the backend pool of the load balancer, and then you can change the existing NAT rules or create new rules to associate with the instance of the existing scale set.
I... | Check out the example for "update the load balancer of your scale set" here: <https://learn.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-upgrade-scale-set#examples>. This walks through how to remove an existing load balancer from a scale set and add a new one in its place. When you up... |
49,249,179 | the command do not work, when I want to show the nova's endpoints:
```
openstack endpoint show nova
```
it will report error:
>
> More than one endpoint exists with the name 'nova'.
>
>
> | 2018/03/13 | [
"https://Stackoverflow.com/questions/49249179",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7693832/"
] | Following code will be helpful to you,
```
var table = $('#stockistTable').DataTable();
var index = $(this).closest("tr")[0];
table.fnDeleteRow(table.fnGetPosition(index));
```
[Fiddle Demo Here](https://jsfiddle.net/0afkg0gy/3/) | This example [here](https://datatables.net/examples/api/select_single_row.html) demonstrates how to delete rows from a click event - it should do the trick for you. |
49,249,179 | the command do not work, when I want to show the nova's endpoints:
```
openstack endpoint show nova
```
it will report error:
>
> More than one endpoint exists with the name 'nova'.
>
>
> | 2018/03/13 | [
"https://Stackoverflow.com/questions/49249179",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7693832/"
] | Following code will be helpful to you,
```
var table = $('#stockistTable').DataTable();
var index = $(this).closest("tr")[0];
table.fnDeleteRow(table.fnGetPosition(index));
```
[Fiddle Demo Here](https://jsfiddle.net/0afkg0gy/3/) | ```
var dtRow=0; //declare this globally
dtRow = $(this).closest('tr'); //assigning value on click delete
var stockistTable=$('#stockistTable').DataTable();
stockistTable.row(dtRow).remove().draw( false );
```
This Code worked for me!!!! |
49,249,179 | the command do not work, when I want to show the nova's endpoints:
```
openstack endpoint show nova
```
it will report error:
>
> More than one endpoint exists with the name 'nova'.
>
>
> | 2018/03/13 | [
"https://Stackoverflow.com/questions/49249179",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7693832/"
] | You can make a Jquery object of the entire row element and pass it in `row()` function of Datatable.
```
var table = $('#stockistTable').DataTable();
var removingRow = $(this).closest('tr');
table.row(removingRow).remove().draw();
``` | This example [here](https://datatables.net/examples/api/select_single_row.html) demonstrates how to delete rows from a click event - it should do the trick for you. |
49,249,179 | the command do not work, when I want to show the nova's endpoints:
```
openstack endpoint show nova
```
it will report error:
>
> More than one endpoint exists with the name 'nova'.
>
>
> | 2018/03/13 | [
"https://Stackoverflow.com/questions/49249179",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7693832/"
] | You can make a Jquery object of the entire row element and pass it in `row()` function of Datatable.
```
var table = $('#stockistTable').DataTable();
var removingRow = $(this).closest('tr');
table.row(removingRow).remove().draw();
``` | ```
var dtRow=0; //declare this globally
dtRow = $(this).closest('tr'); //assigning value on click delete
var stockistTable=$('#stockistTable').DataTable();
stockistTable.row(dtRow).remove().draw( false );
```
This Code worked for me!!!! |
49,249,179 | the command do not work, when I want to show the nova's endpoints:
```
openstack endpoint show nova
```
it will report error:
>
> More than one endpoint exists with the name 'nova'.
>
>
> | 2018/03/13 | [
"https://Stackoverflow.com/questions/49249179",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7693832/"
] | You can try this
```
$(document).ready(function() {
var table = $('#stockistTable').DataTable();
$('tr').on("click", function(e) {
index = $(this).closest('tr').index();
table.row( $(this) ).remove().draw();
});
} );
``` | This example [here](https://datatables.net/examples/api/select_single_row.html) demonstrates how to delete rows from a click event - it should do the trick for you. |
49,249,179 | the command do not work, when I want to show the nova's endpoints:
```
openstack endpoint show nova
```
it will report error:
>
> More than one endpoint exists with the name 'nova'.
>
>
> | 2018/03/13 | [
"https://Stackoverflow.com/questions/49249179",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7693832/"
] | You can try this
```
$(document).ready(function() {
var table = $('#stockistTable').DataTable();
$('tr').on("click", function(e) {
index = $(this).closest('tr').index();
table.row( $(this) ).remove().draw();
});
} );
``` | ```
var dtRow=0; //declare this globally
dtRow = $(this).closest('tr'); //assigning value on click delete
var stockistTable=$('#stockistTable').DataTable();
stockistTable.row(dtRow).remove().draw( false );
```
This Code worked for me!!!! |
49,249,179 | the command do not work, when I want to show the nova's endpoints:
```
openstack endpoint show nova
```
it will report error:
>
> More than one endpoint exists with the name 'nova'.
>
>
> | 2018/03/13 | [
"https://Stackoverflow.com/questions/49249179",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7693832/"
] | ```
var dtRow=0; //declare this globally
dtRow = $(this).closest('tr'); //assigning value on click delete
var stockistTable=$('#stockistTable').DataTable();
stockistTable.row(dtRow).remove().draw( false );
```
This Code worked for me!!!! | This example [here](https://datatables.net/examples/api/select_single_row.html) demonstrates how to delete rows from a click event - it should do the trick for you. |
10,551,464 | I have problem getting cookies from HTTP response. Im sure, that response should have cookies, but I cant see them in my app.
Here is my code:
```cs
private static CookieContainer cookies = new CookieContainer();
private static CookieContainer Cookies
{
get
{
return cookies;
... | 2012/05/11 | [
"https://Stackoverflow.com/questions/10551464",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/915328/"
] | The problem is in returned Cookies. Cookies without set DOMAIN are NOT supported in WP7. | I think you can just create an global variable to save the cookie.Such as in your app.xaml.cs file you can create a variable like this:
```
public CookieContainer GlobalCookie{get;set;}
```
And make the GloalCookie equal to your successful HttpWebRequest CookieContainer.
Then you can use this variable when you call... |
4,431,913 | I get confused about the difference between linear and nonlinear system. Suppose that we have a linear system
\begin{equation}\label{1}
Ax=b \tag{1}
\end{equation}
with $A \in \mathbb{R}^{n\times n}$ and $b\in \mathbb{R}^{n}$and we define the $x$ as a nonlinear function
\begin{equation}
x(t) = \sin(2\pi t) + \sin(3\... | 2022/04/20 | [
"https://math.stackexchange.com/questions/4431913",
"https://math.stackexchange.com",
"https://math.stackexchange.com/users/856284/"
] | In a linear system of equation, $x$ is the **vector of variables**. It is not a vector of functions, so speaking about $x(t)$ is not really sensible. In your writing, you first say that $x\in\mathbb R^n$, but then you use the term $x(t)$. This is nonsensical. $x$ can either be a vector, or it can be a function, but it ... | Let us first consider a system of equations, where we have only *one* equation. Then it is called *linear* if it is of the form
$$
a\_1x\_1+\cdots +a\_nx\_n=b,
$$
for constants $a\_i,b\in K$ and variables $x\_i$. It is called *polynomial*, if it is of the form
$$
f(x\_1,\ldots ,x\_n)=0,
$$
for a polynomial $f\in K[x\_1... |
31,006,709 | I am trying to implement a map using fold. I could do so in Haskell
```
data Tree a = EmptyTree | Node a (Tree a) (Tree a) deriving (Show)
foldTree :: Tree a -> b -> (b -> a -> b -> b) -> b
foldTree EmptyTree d _ = d
foldTree (Node a l r) d f = f (foldTree l d f) a (foldTree r d f)
mapTree :: Tree a -> ... | 2015/06/23 | [
"https://Stackoverflow.com/questions/31006709",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3336961/"
] | Turned out PFUser class has private property `authData` with all necessary information. We can retrieve it like this:
```
PFUser* user = PFUser.currentUser;
NSDictionary* authData = [user valueForKey:@"authData"];
```
While it works in `Parse SDK v.1.9.1`, it may fail to work in upcoming or previous versions of SDK. | This is not possible, as the authData from the Parse \_User table is not returned to the client. You should to a regular FBSDKGraphRequest to "/me" |
32,076,894 | I've got Data from a Station (TimeStamp %Y-%m-%d %H:%M) which I'd like to compare with a reference file (TimeStamp: %H:%M)
The data file from the weather station has 1 entry ever Minute
The reference File has one entry every 15 Minutes.
I tried to plot both files the same axis but for some reason it doesn't work.
I al... | 2015/08/18 | [
"https://Stackoverflow.com/questions/32076894",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/5239927/"
] | You're looking for `Indirect()`. If your cell A1 has the path that you will change (`C:\Users\Arun Victor\Documents\New folder\[MASTER.xlsm]`).
In your sheet1, those cells which are currently `=C:\Users\Arun Victor\Documents\New folder\[MASTER.xlsm]Employee WOs'!D4`, can be replaced with `=Indirect("'"&A1&"Employee WO... | In your VBA code, you can use something like:
```
= Sheet("Settings").Cells(1,1) & "Employee WOs'!D4"
```
This way your code will automatically take your changes on cell A1 from your Settings sheet. |
37,630,855 | **My package:** `Python 2.7.11+`
`Django 1.9.6`
In my `urls.py` I have imported:
`from django.conf.urls import patterns, url, include`
but it's dysplays an error when I type `python manage.py runserver`:
>
> ImportError: cannot import name patterns
>
>
>
I have tried to change import string with:
`from django... | 2016/06/04 | [
"https://Stackoverflow.com/questions/37630855",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/6423072/"
] | Since Django 1.7, the urlconf is a simple list and no longer requires the patterns import. So remove patterns from your import, and see the example here on the syntax to use: <https://docs.djangoproject.com/en/1.9/topics/http/urls/#example> | patterns is deprecated after Django 1.7. You can defines urls simply like this
```js
urlpatterns = [
url(r'^admin/', include(admin.site.urls)),
url(r'', include('web.urls')),
]
```
or you can import urls from your app and define urls like this
```js
from app import urls
urlpatterns = [
url(r'^admin/... |
609,171 | I would like to add a fully qualified domain name to my **Centos 6 VM** that is running on **virtualbox**.
The virtualbox is set to be in **bridged** mode.
I'm a windows programmer, and I am as far as they get from networking / linux.
I would be most grateful if you could point me into the right direction on how to... | 2013/06/18 | [
"https://superuser.com/questions/609171",
"https://superuser.com",
"https://superuser.com/users/10616/"
] | You can also do the following:
Check the IP address on the CentOS VM by running the command `ifconfig`. It should be something like `10.0.2.15`. Now modify the file `/etc/hosts` **on CentOS**, add the following line
```
10.0.2.15 virtualCentOS.local virtualCentOS
``` | Typically setting up a dns record in your dns server is the best way to do this.
You will need to edit the following file c:\windows\system32\drivers\etc\hosts
Do the following
Start -> Run
notepad c:\windows\system32\drivers\etc\hosts
In notepad, add the following line to the end of the file (change 192.168.10.10... |
69,554,406 | I'm working on react app and using material-ui v5 and I'm stuck on this error
theme.spacing is not working.
```
import { makeStyles } from "@material-ui/styles";
import React from "react";
import Drawer from "@mui/material/Drawer";
import Typography from "@mui/material/Typography";
import List from "@mui/material/List... | 2021/10/13 | [
"https://Stackoverflow.com/questions/69554406",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/17133643/"
] | How do you create the theme, did you made with createTheme? You need to pass the provider in the root of your application. Try import like this.
```
import { createTheme } from '@mui/material/styles
```
Then define all your global styles for your application and then make, for example, this.
```
import { ThemeProvi... | Maybe your import is wrong ? Try this
```
import {makeStyles} from "@material-ui/core/styles";
``` |
69,554,406 | I'm working on react app and using material-ui v5 and I'm stuck on this error
theme.spacing is not working.
```
import { makeStyles } from "@material-ui/styles";
import React from "react";
import Drawer from "@mui/material/Drawer";
import Typography from "@mui/material/Typography";
import List from "@mui/material/List... | 2021/10/13 | [
"https://Stackoverflow.com/questions/69554406",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/17133643/"
] | **This is not working because you have to type your Theme**
1. import the Theme
```
import { Theme } from '@mui/material'
```
2. Now type it:
```
const useStyles=makeStyles((theme:Theme)=>({
root:{
background: 'black',
padding:theme.spacing(3),
}
}))
```
I was facing the exact same probl... | Maybe your import is wrong ? Try this
```
import {makeStyles} from "@material-ui/core/styles";
``` |
69,554,406 | I'm working on react app and using material-ui v5 and I'm stuck on this error
theme.spacing is not working.
```
import { makeStyles } from "@material-ui/styles";
import React from "react";
import Drawer from "@mui/material/Drawer";
import Typography from "@mui/material/Typography";
import List from "@mui/material/List... | 2021/10/13 | [
"https://Stackoverflow.com/questions/69554406",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/17133643/"
] | **This is not working because you have to type your Theme**
1. import the Theme
```
import { Theme } from '@mui/material'
```
2. Now type it:
```
const useStyles=makeStyles((theme:Theme)=>({
root:{
background: 'black',
padding:theme.spacing(3),
}
}))
```
I was facing the exact same probl... | How do you create the theme, did you made with createTheme? You need to pass the provider in the root of your application. Try import like this.
```
import { createTheme } from '@mui/material/styles
```
Then define all your global styles for your application and then make, for example, this.
```
import { ThemeProvi... |
33,579 | With today's technology could mankind create a system of rings similar to Saturn composed of different masses of water particles and silicate minerals that would freeze? How could mankind accomplish this feat of engineering?
[](https://i.stack.imgur.... | 2016/01/18 | [
"https://worldbuilding.stackexchange.com/questions/33579",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/13424/"
] | UPDATE: It looks like [This question has been asked before](https://worldbuilding.stackexchange.com/questions/14850/earth-with-planetary-ring?rq=1), with pretty much the same sort of answer.
Well, ignoring the big question of **"WHY?"**:
Using the same method that formed Saturn's Rings
-------------------------------... | Launching stuff from the planet to orbit is expensive.
And if we want to do some major planet colonizing some day we're going to need to build a lot of ships and that means a lot of launches with a lot of equipment from Earth, unless we start manufacturing in space.
So pull in some raw materials in the form of capt... |
33,579 | With today's technology could mankind create a system of rings similar to Saturn composed of different masses of water particles and silicate minerals that would freeze? How could mankind accomplish this feat of engineering?
[](https://i.stack.imgur.... | 2016/01/18 | [
"https://worldbuilding.stackexchange.com/questions/33579",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/13424/"
] | UPDATE: It looks like [This question has been asked before](https://worldbuilding.stackexchange.com/questions/14850/earth-with-planetary-ring?rq=1), with pretty much the same sort of answer.
Well, ignoring the big question of **"WHY?"**:
Using the same method that formed Saturn's Rings
-------------------------------... | Stealing from the Asteroid Belt
===============================
One option would be to 'borrow' the required mass from the asteroid belt between Mars and Jupiter - no easy feat for sure, but something current space agencies [have plans](https://www.nasa.gov/content/what-is-nasa-s-asteroid-redirect-mission) to do, albe... |
33,579 | With today's technology could mankind create a system of rings similar to Saturn composed of different masses of water particles and silicate minerals that would freeze? How could mankind accomplish this feat of engineering?
[](https://i.stack.imgur.... | 2016/01/18 | [
"https://worldbuilding.stackexchange.com/questions/33579",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/13424/"
] | Creating a temporary ring is relatively simple, and most of the previous posters have provided useful answers. The problem isn't so much that you can make a ring, but how to make it a stable structure in orbit around a planet.
The answer is shepherd moons.
[](https://i.stack.imgur.... | 2016/01/18 | [
"https://worldbuilding.stackexchange.com/questions/33579",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/13424/"
] | Creating a temporary ring is relatively simple, and most of the previous posters have provided useful answers. The problem isn't so much that you can make a ring, but how to make it a stable structure in orbit around a planet.
The answer is shepherd moons.
[ to do, albe... |
42,407,702 | Hello all i am try to search my gmail using AE.NET.Mail.
But i am facing a problem when i tried to search email using SentOn method it's always retruning **`xm006 BAD Could not parse command`**.
I am sening this Datetime Fromat yyyy-MM-dd
Can you guys please help me what is the problem here?
Thank you! | 2017/02/23 | [
"https://Stackoverflow.com/questions/42407702",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7608846/"
] | There's a bug filed about this exact problem on AE.Net.Mail's GitHub issues page here: <https://github.com/andyedinborough/aenetmail/issues/197>
AE.Net.Mail is unlikely to get a fix anytime soon as the project is unmaintained.
Your best option is probably to switch to my [MailKit](https://github.com/jstedfast/MailKit... | A little late for this but I guess it could help someone. Since gmail doesn't allow anymore the same DateTime param. A workaround must be made:
```
imapClient.SelectMailbox("INBOX");
SearchCondition condition = new SearchCondition();
condition.Field = SearchCondition.Fields.Since;
condition.Value = new DateTime(2019, ... |
8,337,593 | I'm tring to use hive to analysis our log, and I have a question.
Assume we have some data like this:
A 1
A 1
A 1
B 1
C 1
B 1
How can I make it like this in hive table(order is not important, I just want to merge them) ?
A 1
B 1
C 1
without pre-process it with awk/sed or something like ... | 2011/12/01 | [
"https://Stackoverflow.com/questions/8337593",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/853688/"
] | One idea.. you could create a table around the first file (called 'oldtable').
Then run something like this....
create table newtable select field1, max(field) from oldtable group by field1;
Not sure I have the syntax right, but the idea is to get unique values of the first field, and only one of the second. Make sen... | For merging the data, we can also use "UNION ALL" , it can also merge two different types of datatypes.
insert overwrite into table test1
(select x.\* from t1 x )
UNION ALL
(select y.\* from t2 y);
here we are merging two tables data (t1 and t2) into one single table test1. |
8,337,593 | I'm tring to use hive to analysis our log, and I have a question.
Assume we have some data like this:
A 1
A 1
A 1
B 1
C 1
B 1
How can I make it like this in hive table(order is not important, I just want to merge them) ?
A 1
B 1
C 1
without pre-process it with awk/sed or something like ... | 2011/12/01 | [
"https://Stackoverflow.com/questions/8337593",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/853688/"
] | One idea.. you could create a table around the first file (called 'oldtable').
Then run something like this....
create table newtable select field1, max(field) from oldtable group by field1;
Not sure I have the syntax right, but the idea is to get unique values of the first field, and only one of the second. Make sen... | There's no way to pre-process the data while it's being loaded without using an external program. You could use a view if you'd like to keep the original data intact.
```
hive> SELECT * FROM table1;
OK
A 1
A 1
A 1
B 1
C 1
B 1
B 2 # Added to show it will group correctly with d... |
8,337,593 | I'm tring to use hive to analysis our log, and I have a question.
Assume we have some data like this:
A 1
A 1
A 1
B 1
C 1
B 1
How can I make it like this in hive table(order is not important, I just want to merge them) ?
A 1
B 1
C 1
without pre-process it with awk/sed or something like ... | 2011/12/01 | [
"https://Stackoverflow.com/questions/8337593",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/853688/"
] | **Step 1:** Create a Hive table for input data set .
create table if not exists table1 (fld1 string, fld2 string ) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t';
(i assumed field seprator is \t, you can replace it with actual separator)
**Step 2 :** Run below to get the merge data you are looking for
create table... | For merging the data, we can also use "UNION ALL" , it can also merge two different types of datatypes.
insert overwrite into table test1
(select x.\* from t1 x )
UNION ALL
(select y.\* from t2 y);
here we are merging two tables data (t1 and t2) into one single table test1. |
8,337,593 | I'm tring to use hive to analysis our log, and I have a question.
Assume we have some data like this:
A 1
A 1
A 1
B 1
C 1
B 1
How can I make it like this in hive table(order is not important, I just want to merge them) ?
A 1
B 1
C 1
without pre-process it with awk/sed or something like ... | 2011/12/01 | [
"https://Stackoverflow.com/questions/8337593",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/853688/"
] | **Step 1:** Create a Hive table for input data set .
create table if not exists table1 (fld1 string, fld2 string ) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t';
(i assumed field seprator is \t, you can replace it with actual separator)
**Step 2 :** Run below to get the merge data you are looking for
create table... | There's no way to pre-process the data while it's being loaded without using an external program. You could use a view if you'd like to keep the original data intact.
```
hive> SELECT * FROM table1;
OK
A 1
A 1
A 1
B 1
C 1
B 1
B 2 # Added to show it will group correctly with d... |
46,509,745 | In my Stored procedure, I have added a command to create a hash temp table #DIR\_CAT. But every time I execute the procedure I get this error:
"There is already an object named '#DIR\_Cat' in the database."
Even when I have already created an Exists clause at the start of SP to check and drop the table if it is present... | 2017/10/01 | [
"https://Stackoverflow.com/questions/46509745",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/8702769/"
] | If you read the desired output matrix top-down, then left-right, you see the pattern 1,2,3, 0,0,0, 1,2,3, 0,0,0, 1,2,3. You can use that pattern to easily create a linear array, and then reshape it into the two-dimensional form:
```
import numpy as np
X = np.array([1,2,3])
N = len(X)
zeros = np.zeros_like(X)
m = np.hs... | An other writable solution :
```
def block(X):
n=X.size
zeros=np.zeros((2*n-1,n),X.dtype)
zeros[::2]=X
return zeros.reshape(n,-1).T
```
try :
```
In [2]: %timeit block(X)
600 µs ± 33 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
``` |
46,509,745 | In my Stored procedure, I have added a command to create a hash temp table #DIR\_CAT. But every time I execute the procedure I get this error:
"There is already an object named '#DIR\_Cat' in the database."
Even when I have already created an Exists clause at the start of SP to check and drop the table if it is present... | 2017/10/01 | [
"https://Stackoverflow.com/questions/46509745",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/8702769/"
] | **Approach #1 :** Using [`np.lib.stride_tricks.as_strided`](http://www.scipy-lectures.org/advanced/advanced_numpy/#indexing-scheme-strides) -
```
from numpy.lib.stride_tricks import as_strided as strided
def zeropad_arr_v1(X):
n = len(X)
z = np.zeros(len(X)-1,dtype=X.dtype)
X_ext = np.concatenate(( z, X, ... | An other writable solution :
```
def block(X):
n=X.size
zeros=np.zeros((2*n-1,n),X.dtype)
zeros[::2]=X
return zeros.reshape(n,-1).T
```
try :
```
In [2]: %timeit block(X)
600 µs ± 33 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
``` |
2,862,222 | Find the curve length of the intersection between the unit sphere $x^2+y^2+z^2=1$ and the plane $x+y=1$
I have read [this](https://math.stackexchange.com/questions/2004224/parametrization-of-the-intersection-between-a-sphere-and-a-plane) and [this](https://math.stackexchange.com/questions/2339243/when-find-the-equatio... | 2018/07/25 | [
"https://math.stackexchange.com/questions/2862222",
"https://math.stackexchange.com",
"https://math.stackexchange.com/users/300848/"
] | One (extreme) perspective on Curry-Howard (as a general principle) is that it states that proof theorists and programming language theorists/type theorists are simply using different words for the *exact* same things. From this (extreme) perspective, the answer to your first question is trivially "yes". You simply call... | As the previous answer already suggested, imperative languages can be seen as less restrictive languages than functional languages. Any language with a strong enough type system allows you to express types corresponding to mathematical propositions. If you restrict yourself to only a subset of the language, you can als... |
244,788 | I have downloaded `node.js` tarball from [its website](http://nodejs.org/), and now I would like install the manpage that comes with it so that I can view it by typing:
```
man nodejs
```
How can I do this? | 2013/01/18 | [
"https://askubuntu.com/questions/244788",
"https://askubuntu.com",
"https://askubuntu.com/users/23006/"
] | It's not `man nodejs`, but `man 1 node`. **And it will be there by default.**
It will be installed for you with the regular installation method (e.g. `sudo make install`) as the `tools/install.py` called from the `Makefile` will take care of it:
```
if 'freebsd' in sys.platform or 'openbsd' in sys.platform:
action(... | In addition to the man page, Node sets up its own help server.
```
npm help <term>
```
or to get started:
```
npm help npm
```
The documentation is also online at: [Node.js API docs](http://nodejs.org/api/) |
6,872 | Most stores have Candy1 for $49, and Candy1SE for $39.
but i can't find the difference.
the SE have a golden spring, just like the Candy2. The plain Candy1 has a silver one.
Candy 1:
$49
Candy 1 SE:
$39
![enter image description here](https://i.stack.imgur.com/sjNuj... | 2011/11/12 | [
"https://bicycles.stackexchange.com/questions/6872",
"https://bicycles.stackexchange.com",
"https://bicycles.stackexchange.com/users/1635/"
] | People recommend the late [Sheldon Brown's site](http://www.sheldonbrown.com/). | There isn't.
you can read reviews and guides all day.
bikes are really simple (and somewhat dumb) machines. There's really nothing much to improve.
But there's several things that does the same in completely different ways. So the only answer to this question is experimentation.
What may work for someone like magic... |
42,838,162 | I want the pyramid to look like this if the input was 6
```
0
12
345
6789
01234
567890
```
Here's my code
```
void HalfPyramid(int num)
{
for (int a=0; a<num; a++)
{
for (int b=0; b<num-a; b++)
{
cout << " ";
}
for (int c=0; c<a; c++)
{
... | 2017/03/16 | [
"https://Stackoverflow.com/questions/42838162",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7699290/"
] | You need another variable. That variable needs to start at 0 and increment every time you print it. Then since you need to to wrap back to 0 once you print 9 we will use the modulus operator to constrain the output to the range of [0, 9]. With all that you get
```
void HalfPyramid(int num)
{
int output = 0;
fo... | ```
void HalfPyramid(int num)
{
int cur = 0;
for (int a=0; a<num; a++)
{
for (int b = 1; b < num - a ; b++)
{
cout << " ";
}
for (int c=0; c < a + 1; c++)
{
cout << cur;
cur = (cur+1)%10;
}
cout << endl;
... |
42,838,162 | I want the pyramid to look like this if the input was 6
```
0
12
345
6789
01234
567890
```
Here's my code
```
void HalfPyramid(int num)
{
for (int a=0; a<num; a++)
{
for (int b=0; b<num-a; b++)
{
cout << " ";
}
for (int c=0; c<a; c++)
{
... | 2017/03/16 | [
"https://Stackoverflow.com/questions/42838162",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7699290/"
] | ```
void HalfPyramid(int num)
{
int cur = 0;
for (int a=0; a<num; a++)
{
for (int b = 1; b < num - a ; b++)
{
cout << " ";
}
for (int c=0; c < a + 1; c++)
{
cout << cur;
cur = (cur+1)%10;
}
cout << endl;
... | The other answers already provide working versions of `HalfPyramid`. This answer, hopefully, makes you think of the logic and functionality a bit differently. I like to create small functions that capture the essence what I am trying to do rather than using the language to just do it.
```
bool isSpace(int num, int a, ... |
42,838,162 | I want the pyramid to look like this if the input was 6
```
0
12
345
6789
01234
567890
```
Here's my code
```
void HalfPyramid(int num)
{
for (int a=0; a<num; a++)
{
for (int b=0; b<num-a; b++)
{
cout << " ";
}
for (int c=0; c<a; c++)
{
... | 2017/03/16 | [
"https://Stackoverflow.com/questions/42838162",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7699290/"
] | You need another variable. That variable needs to start at 0 and increment every time you print it. Then since you need to to wrap back to 0 once you print 9 we will use the modulus operator to constrain the output to the range of [0, 9]. With all that you get
```
void HalfPyramid(int num)
{
int output = 0;
fo... | The other answers already provide working versions of `HalfPyramid`. This answer, hopefully, makes you think of the logic and functionality a bit differently. I like to create small functions that capture the essence what I am trying to do rather than using the language to just do it.
```
bool isSpace(int num, int a, ... |
27,308,454 | In Android, How to check if my params contains the value image
here is the params output :
```
["image=fdfdsgdg5dsgd1s211511", "id=dfd4f5d4f5d", "api_id=f4f54f5d454df"]
```
Code:
```
public String getQueryString(List<NameValuePair> params) {
Log.d(TAG, "getQueryString - params => " + params);
String queryS... | 2014/12/05 | [
"https://Stackoverflow.com/questions/27308454",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3792198/"
] | Is your pycharm version community or professional? If your pycharm is community, maybe it needs a pluggin to support django. If your pycharm is professional, make sure that in: `Preferences > Languages&Frameworks > Django > Enable Django Support` the option is chosen. Here is the image:
;
const app = express();
app.use (express.json());
app.post('api/hostels', (req, res) => {
const hostel = {
id : hostels.length + 1,
name: req.body.name
};
hostels.push(hostel);
res.send(hostel);... | 2019/12/02 | [
"https://Stackoverflow.com/questions/59137067",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11679569/"
] | Well, you did a small mistake while defining a route of the express.
you have `app.post('api/hostels', (req, res) => {})` instead you should have `app.post('/api/hostels', (req, res) => {})` | You are posting to `/api/requests`, your endpoint shows `/api/hostels`. Change the endpoint on your postman to `/api/hostels`. |
59,137,067 | I am new in nodeJS, I have created this application:
```
const express = require('express');
const app = express();
app.use (express.json());
app.post('api/hostels', (req, res) => {
const hostel = {
id : hostels.length + 1,
name: req.body.name
};
hostels.push(hostel);
res.send(hostel);... | 2019/12/02 | [
"https://Stackoverflow.com/questions/59137067",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11679569/"
] | Well, you did a small mistake while defining a route of the express.
you have `app.post('api/hostels', (req, res) => {})` instead you should have `app.post('/api/hostels', (req, res) => {})` | There is a mistake in your post, theres a missing `/` in you app.post
it should be `app.post('/api/hostels', (req, res) => { }` |
21,052,377 | C++11 makes it possible to overload member functions based on reference qualifiers:
```
class Foo {
public:
void f() &; // for when *this is an lvalue
void f() &&; // for when *this is an rvalue
};
Foo obj;
obj.f(); // calls lvalue overload
std::move(obj).f(); // calls rvalue overload
```
I ... | 2014/01/10 | [
"https://Stackoverflow.com/questions/21052377",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1426649/"
] | One use case is to [prohibit assignment to temporaries](https://stackoverflow.com/q/16834937/819272)
```
// can only be used with lvalues
T& operator*=(T const& other) & { /* ... */ return *this; }
// not possible to do (a * b) = c;
T operator*(T const& lhs, T const& rhs) { return lhs *= rhs; }
```
whereas not... | If f() needs a Foo temp that is a copy of this and modified, you can modify the temp `this` instead while you can't otherwise |
21,052,377 | C++11 makes it possible to overload member functions based on reference qualifiers:
```
class Foo {
public:
void f() &; // for when *this is an lvalue
void f() &&; // for when *this is an rvalue
};
Foo obj;
obj.f(); // calls lvalue overload
std::move(obj).f(); // calls rvalue overload
```
I ... | 2014/01/10 | [
"https://Stackoverflow.com/questions/21052377",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1426649/"
] | In a class that provides reference-getters, ref-qualifier overloading can activate move semantics when extracting from an rvalue. E.g.:
```
class some_class {
huge_heavy_class hhc;
public:
huge_heavy_class& get() & {
return hhc;
}
huge_heavy_class const& get() const& {
return hhc;
}
huge_heavy_clas... | One use case is to [prohibit assignment to temporaries](https://stackoverflow.com/q/16834937/819272)
```
// can only be used with lvalues
T& operator*=(T const& other) & { /* ... */ return *this; }
// not possible to do (a * b) = c;
T operator*(T const& lhs, T const& rhs) { return lhs *= rhs; }
```
whereas not... |
21,052,377 | C++11 makes it possible to overload member functions based on reference qualifiers:
```
class Foo {
public:
void f() &; // for when *this is an lvalue
void f() &&; // for when *this is an rvalue
};
Foo obj;
obj.f(); // calls lvalue overload
std::move(obj).f(); // calls rvalue overload
```
I ... | 2014/01/10 | [
"https://Stackoverflow.com/questions/21052377",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1426649/"
] | One use case is to [prohibit assignment to temporaries](https://stackoverflow.com/q/16834937/819272)
```
// can only be used with lvalues
T& operator*=(T const& other) & { /* ... */ return *this; }
// not possible to do (a * b) = c;
T operator*(T const& lhs, T const& rhs) { return lhs *= rhs; }
```
whereas not... | On the one hand you can use them to prevent functions that are semantically nonsensical to call on temporaries from being called, such as `operator=` or functions that mutate internal state and return `void`, by adding `&` as a reference qualifier.
On the other hand you can use it for optimizations such as moving a me... |
21,052,377 | C++11 makes it possible to overload member functions based on reference qualifiers:
```
class Foo {
public:
void f() &; // for when *this is an lvalue
void f() &&; // for when *this is an rvalue
};
Foo obj;
obj.f(); // calls lvalue overload
std::move(obj).f(); // calls rvalue overload
```
I ... | 2014/01/10 | [
"https://Stackoverflow.com/questions/21052377",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1426649/"
] | In a class that provides reference-getters, ref-qualifier overloading can activate move semantics when extracting from an rvalue. E.g.:
```
class some_class {
huge_heavy_class hhc;
public:
huge_heavy_class& get() & {
return hhc;
}
huge_heavy_class const& get() const& {
return hhc;
}
huge_heavy_clas... | If f() needs a Foo temp that is a copy of this and modified, you can modify the temp `this` instead while you can't otherwise |
21,052,377 | C++11 makes it possible to overload member functions based on reference qualifiers:
```
class Foo {
public:
void f() &; // for when *this is an lvalue
void f() &&; // for when *this is an rvalue
};
Foo obj;
obj.f(); // calls lvalue overload
std::move(obj).f(); // calls rvalue overload
```
I ... | 2014/01/10 | [
"https://Stackoverflow.com/questions/21052377",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1426649/"
] | If f() needs a Foo temp that is a copy of this and modified, you can modify the temp `this` instead while you can't otherwise | On the one hand you can use them to prevent functions that are semantically nonsensical to call on temporaries from being called, such as `operator=` or functions that mutate internal state and return `void`, by adding `&` as a reference qualifier.
On the other hand you can use it for optimizations such as moving a me... |
21,052,377 | C++11 makes it possible to overload member functions based on reference qualifiers:
```
class Foo {
public:
void f() &; // for when *this is an lvalue
void f() &&; // for when *this is an rvalue
};
Foo obj;
obj.f(); // calls lvalue overload
std::move(obj).f(); // calls rvalue overload
```
I ... | 2014/01/10 | [
"https://Stackoverflow.com/questions/21052377",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1426649/"
] | In a class that provides reference-getters, ref-qualifier overloading can activate move semantics when extracting from an rvalue. E.g.:
```
class some_class {
huge_heavy_class hhc;
public:
huge_heavy_class& get() & {
return hhc;
}
huge_heavy_class const& get() const& {
return hhc;
}
huge_heavy_clas... | On the one hand you can use them to prevent functions that are semantically nonsensical to call on temporaries from being called, such as `operator=` or functions that mutate internal state and return `void`, by adding `&` as a reference qualifier.
On the other hand you can use it for optimizations such as moving a me... |
1,493,140 | i have a form that utilizes checkboxes.
>
> `<input type="checkbox" name="check[]" value="notsure"> Not Sure, Please help me determine <br />
> <input type="checkbox" name="check[]" value="keyboard"> Keyboard <br />
> <input type="checkbox" name="check[]" value="touchscreen"> Touch Screen Monitors <br />
> <input... | 2009/09/29 | [
"https://Stackoverflow.com/questions/1493140",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/-1/"
] | is any of your checkboxes ticked? php’s `$_POST` array will only have checkboxes which have been ticked
to silence your warning use this:
```
$addequip = implode(', ', empty($_POST['check']) ? array() : $_POST['check'] );
``` | the following site seems to be what you need:
<http://www.ozzu.com/programming-forum/desperate-gettin-checkbox-values-post-php-t28756.html> |
1,493,140 | i have a form that utilizes checkboxes.
>
> `<input type="checkbox" name="check[]" value="notsure"> Not Sure, Please help me determine <br />
> <input type="checkbox" name="check[]" value="keyboard"> Keyboard <br />
> <input type="checkbox" name="check[]" value="touchscreen"> Touch Screen Monitors <br />
> <input... | 2009/09/29 | [
"https://Stackoverflow.com/questions/1493140",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/-1/"
] | is any of your checkboxes ticked? php’s `$_POST` array will only have checkboxes which have been ticked
to silence your warning use this:
```
$addequip = implode(', ', empty($_POST['check']) ? array() : $_POST['check'] );
``` | Hi I m the original user who posted this question i couldnt login to my account so posting from another account. After couple hours of trying i somehow managed to make it work partially. Below is the modified form html and process code for checkboxes
```
<input type="checkbox" name="check" value="Touchscreen"> Touchsc... |
31,140,137 | I need to return objects of different classes in a single method using the keyword Object as the return type
```
public class ObjectFactory {
public static Object assignObject(String type) {
if(type.equalsIgnoreCase("abc")){
return new abcClass();
} else if(type.equalsIgnoreCase("def")) {
re... | 2015/06/30 | [
"https://Stackoverflow.com/questions/31140137",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3665420/"
] | Your current code will throw an exception if `assignObject` returns an instance that is not an `abcClass`, so you can change the type of `obj` to `absClass` :
```
public void get(){
abcClass obj=(abcClass)ObjectFactory.assignObject("abc");
}
``` | You can use this as a refrence :-
```
public Object varyingReturnType(String testString ){
if(testString == null)
return 1;
else return testString ;
}
Object o1 = varyingReturnType("Lets Check String");
if( o1 instanceof String) //return true
String now = (String) o1;
Object o2 = varyingReturnType(null... |
31,140,137 | I need to return objects of different classes in a single method using the keyword Object as the return type
```
public class ObjectFactory {
public static Object assignObject(String type) {
if(type.equalsIgnoreCase("abc")){
return new abcClass();
} else if(type.equalsIgnoreCase("def")) {
re... | 2015/06/30 | [
"https://Stackoverflow.com/questions/31140137",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3665420/"
] | I would suggest as one of the commentators on your initial post did. That is, refactor this to use an interface.
Your classes AbcClass, DefClass, and GhiClass, could all implement an interface, lets call it Letters. You can then define a class called LettersFactory, with the method createLetters. At this point, I'd al... | You can use this as a refrence :-
```
public Object varyingReturnType(String testString ){
if(testString == null)
return 1;
else return testString ;
}
Object o1 = varyingReturnType("Lets Check String");
if( o1 instanceof String) //return true
String now = (String) o1;
Object o2 = varyingReturnType(null... |
29,334 | I have a breadboard connected to an Arduino Uno, 220k resistors connected to an led, of course it has a common ground and a pin connected to 5v. All pins are digital.
Now, I want led 1 to turn on for one second, the next led for two seconds and the next for three seconds, but that means, when the second led which has ... | 2016/09/17 | [
"https://arduino.stackexchange.com/questions/29334",
"https://arduino.stackexchange.com",
"https://arduino.stackexchange.com/users/26676/"
] | You could start by drawing a time graph, like this:
```
LED 1 # # # # # # # # # # # # # # # # # #
LED 2 ## ## ## ## ## ## ## ## ##
LED 3 ### ### ### ### ### ###
<-period 1-><-period 2-><-period 3->
```
As you see on the graph, the whole sequence repeats itself every
12 seconds. ... | EDIT: I just love Finit State Machines and templates to do some simple tasks:
```
class FSM {
public:
using Handler = void(*)(FSM &);
FSM(Handler hnd) : m_func{hnd} {}
void check(uint32_t ts = millis()) {
if (m_next < ts) {
m_func(*this);
}
}
void delay(uint32_t _delay) {
... |
29,334 | I have a breadboard connected to an Arduino Uno, 220k resistors connected to an led, of course it has a common ground and a pin connected to 5v. All pins are digital.
Now, I want led 1 to turn on for one second, the next led for two seconds and the next for three seconds, but that means, when the second led which has ... | 2016/09/17 | [
"https://arduino.stackexchange.com/questions/29334",
"https://arduino.stackexchange.com",
"https://arduino.stackexchange.com/users/26676/"
] | You could start by drawing a time graph, like this:
```
LED 1 # # # # # # # # # # # # # # # # # #
LED 2 ## ## ## ## ## ## ## ## ##
LED 3 ### ### ### ### ### ###
<-period 1-><-period 2-><-period 3->
```
As you see on the graph, the whole sequence repeats itself every
12 seconds. ... | How about this? Basically each loop is 1sec, and each LED has it's own counter which increases. If the counter is higher than the LED number/onTime, the LED is off for that loop and the conter reset, otherwise LED is on.
```
uint8_t LED[3] = { 2, 4, 7 };
uint8_t LED_COUNTER[3] = { 0, 0, 0 };
void setup() {
for (int... |
17,396,746 | Ex. if I give `2013-7-1` to `2013-7-7`, there are 5 workdays (Mon-Fri) and so the output should be 5
PS: In this problem holidays are excepted, only consider the weekends.
Does anyone have an idea of implementing this into c++? | 2013/07/01 | [
"https://Stackoverflow.com/questions/17396746",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2456268/"
] | I created a new config property: `connect.test.options.port`, and set that to 9001. Now they appear to be running properly on separate ports.
Note also that the `Gruntfile.js` is overriding the `singleRun` property in `karma.conf.js`. Comment/cut that out if you want the config in `karma.conf.js` to work properly.
E... | After I change the port, there is a XHR error,
`The 'Access-Control-Allow-Origin' header has a value 'http://localhost:9000' that is not equal to the supplied origin. Origin 'http://localhost:9090' is therefore not allowed access.`
It was 9000 initially and then I change the grunt
```
connect: {
main: {
options... |
17,396,746 | Ex. if I give `2013-7-1` to `2013-7-7`, there are 5 workdays (Mon-Fri) and so the output should be 5
PS: In this problem holidays are excepted, only consider the weekends.
Does anyone have an idea of implementing this into c++? | 2013/07/01 | [
"https://Stackoverflow.com/questions/17396746",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2456268/"
] | Add `port: 9001` to test, like this:
```
test: {
options: {
port: 9001,
...
}
}
``` | After I change the port, there is a XHR error,
`The 'Access-Control-Allow-Origin' header has a value 'http://localhost:9000' that is not equal to the supplied origin. Origin 'http://localhost:9090' is therefore not allowed access.`
It was 9000 initially and then I change the grunt
```
connect: {
main: {
options... |
3,879,403 | I was wondering why the integral
$$ S = \int\_{-\infty}^{\infty} \frac{x}{1+x^2} \, \mathrm{d}x $$
does not converge. Since the function
$$f(x) = \frac{x}{1+x^2}$$
is antisymmetric, I could calculate the integral as follows
$$S \enspace = \enspace \int\_{-\infty}^{\infty} f(x) \, \mathrm{d}x \enspace = \enspace \i... | 2020/10/24 | [
"https://math.stackexchange.com/questions/3879403",
"https://math.stackexchange.com",
"https://math.stackexchange.com/users/679645/"
] | The problem is simply that, by definition, this improper integral converges if & only the improper integrals $\int\_0^\infty\frac x{1+x^2}\,\mathrm dx$ and $\int\_{-\infty}^0\frac x{1+x^2}\,\mathrm dx$ both converge *independently*. Now
$$\lim\_{A\to\infty}\int\_0^A\frac x{1+x^2}\,\mathrm dx= \lim\_{A\to\infty}\tfrac1... | By definition $$\int\_{0}^{\infty} f(x) dx=\displaystyle\lim\_{n \to \infty}\int\_{0}^{n} f(x) dx$$
$$\int\_{-\infty}^{0} f(x) dx=\displaystyle\lim\_{m \to \infty}\int\_{-m}^{0} f(x) dx$$.
Thus $$\int\_{-\infty}^{\infty} f(x) dx=\int\_{-\infty}^{0} f(x) dx+\int\_{0}^{\infty} f(x) dx\\=\displaystyle\lim\_{n \to \infty}... |
3,879,403 | I was wondering why the integral
$$ S = \int\_{-\infty}^{\infty} \frac{x}{1+x^2} \, \mathrm{d}x $$
does not converge. Since the function
$$f(x) = \frac{x}{1+x^2}$$
is antisymmetric, I could calculate the integral as follows
$$S \enspace = \enspace \int\_{-\infty}^{\infty} f(x) \, \mathrm{d}x \enspace = \enspace \i... | 2020/10/24 | [
"https://math.stackexchange.com/questions/3879403",
"https://math.stackexchange.com",
"https://math.stackexchange.com/users/679645/"
] | The problem is simply that, by definition, this improper integral converges if & only the improper integrals $\int\_0^\infty\frac x{1+x^2}\,\mathrm dx$ and $\int\_{-\infty}^0\frac x{1+x^2}\,\mathrm dx$ both converge *independently*. Now
$$\lim\_{A\to\infty}\int\_0^A\frac x{1+x^2}\,\mathrm dx= \lim\_{A\to\infty}\tfrac1... | If we have an integral:
$$I(n)=\int\_1^\infty\frac{1}{x^n}dx$$
This will only converge for $n>1$, notice how this does not include $n=1$. If we look at the function you are integrating:
$$\frac x{x^2+1}=\frac 1{x+\frac1x}\approx\frac 1x$$ and so your integral will not converge.
If we look at the entire domain of your ... |
30,896,185 | I have a csv with lines like this:
```
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,Sentence Skills 104,,Elementary Algebra 38,
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,,,Elementary Algebra 101,College Level Math 56
Last,First,A00XXXXXX,1492-01-10,2015-06-17,Reading Comprehension 102,,,,
Last,First,A00XXXXXX,1492-01... | 2015/06/17 | [
"https://Stackoverflow.com/questions/30896185",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3582089/"
] | Re-using your awk variable definitions:
```
$ awk -v old="Reading Comprehension " -v new="" -v col=6 'BEGIN{FS=OFS=","} {sub(old,new,$col)} 1' file
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,Sentence Skills 104,,Elementary Algebra 38,
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,,,Elementary Algebra 101,College Level ... | You can use this awk:
```
awk 'BEGIN{FS=OFS=","} {sub(/Reading Comprehension */, "", $6)} 1' file.csv
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,Sentence Skills 104,,Elementary Algebra 38,
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,,,Elementary Algebra 101,College Level Math 56
Last,First,A00XXXXXX,1492-01-10,2015-0... |
30,896,185 | I have a csv with lines like this:
```
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,Sentence Skills 104,,Elementary Algebra 38,
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,,,Elementary Algebra 101,College Level Math 56
Last,First,A00XXXXXX,1492-01-10,2015-06-17,Reading Comprehension 102,,,,
Last,First,A00XXXXXX,1492-01... | 2015/06/17 | [
"https://Stackoverflow.com/questions/30896185",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3582089/"
] | Re-using your awk variable definitions:
```
$ awk -v old="Reading Comprehension " -v new="" -v col=6 'BEGIN{FS=OFS=","} {sub(old,new,$col)} 1' file
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,Sentence Skills 104,,Elementary Algebra 38,
Last,First,A00XXXXXX,1492-01-10,2015-06-17,,,,Elementary Algebra 101,College Level ... | Let give sed a chance (althought is not it's domain)
```
echo "Last,First,A00XXXXXX,1492-01-10,2015-06-17,Reading Comprehension 102,,,," |
sed -r 's/(([^,]*,){5})Reading Comprehension /\1/'
```
Last,First,A00XXXXXX,1492-01-10,2015-06-17,102,,,,
or by *Ed Morton's* suggestion for using variables
```
old="Read... |
12,827,985 | From my understanding of Ruby on Rails and ActiveRecord, I am able to use the ActiveRecord model itself instead of its ID when a parameter is looking for an ID. For example, if I have a `Foo` model that `belongs_to` a `Bar` model, then I could write `bar = Bar.new(foo_id: foo)` instead of `bar = Bar.new(foo_id: foo.id)... | 2012/10/10 | [
"https://Stackoverflow.com/questions/12827985",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/787691/"
] | It seems that any parent object passed directly to :belongs\_to child object gets converted into boolean and thus results in id being 1. One of the solutions would be to initiate the object first, and then set parent objects directly before saving it:
```
@participation = Participation.new
@participation.game = @game
... | ActiveRecord will handle the association for you. However, you have 2 problems that I can from the code above. First, You are trying to assigning the object 'user' to the attribute 'user\_id'. Second, that 'user' is not available for mass\_assignment on instances of the Participation class.
Assigning attributes to an ... |
15,041,788 | I have a custom view that extends ImageView and I use it in an XML layout like this:
```
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
... | 2013/02/23 | [
"https://Stackoverflow.com/questions/15041788",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/476846/"
] | Have a look at the `printf` manpage:
>
>
> ```
> n The number of characters written so far is stored into the integer indicated by the int
> * (or variant) pointer argument. No argument is converted.
>
> ```
>
>
So, you'll have to pass a *pointer to* an int. Also, as Xavier Holt pointed out, ... | You need to pass a pointer to `n`. |
15,041,788 | I have a custom view that extends ImageView and I use it in an XML layout like this:
```
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
... | 2013/02/23 | [
"https://Stackoverflow.com/questions/15041788",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/476846/"
] | You need to pass a pointer to `n`. | The argument to `n` needs to be a pointer to a signed int, not a singed int. |
15,041,788 | I have a custom view that extends ImageView and I use it in an XML layout like this:
```
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
... | 2013/02/23 | [
"https://Stackoverflow.com/questions/15041788",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/476846/"
] | You need to pass a pointer to `n`. | That's not how to use the "%n" specifier.
See [the C99 Standard](http://port70.net/~nsz/c/c99/n1256.html#7.19.6.1).
>
> n
>
> The argument shall be a pointer to signed integer into which is written the number of characters written to the output stream so far by this call to fprintf. No argument is converted, but... |
15,041,788 | I have a custom view that extends ImageView and I use it in an XML layout like this:
```
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
... | 2013/02/23 | [
"https://Stackoverflow.com/questions/15041788",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/476846/"
] | Have a look at the `printf` manpage:
>
>
> ```
> n The number of characters written so far is stored into the integer indicated by the int
> * (or variant) pointer argument. No argument is converted.
>
> ```
>
>
So, you'll have to pass a *pointer to* an int. Also, as Xavier Holt pointed out, ... | The argument to `n` needs to be a pointer to a signed int, not a singed int. |
15,041,788 | I have a custom view that extends ImageView and I use it in an XML layout like this:
```
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
... | 2013/02/23 | [
"https://Stackoverflow.com/questions/15041788",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/476846/"
] | Have a look at the `printf` manpage:
>
>
> ```
> n The number of characters written so far is stored into the integer indicated by the int
> * (or variant) pointer argument. No argument is converted.
>
> ```
>
>
So, you'll have to pass a *pointer to* an int. Also, as Xavier Holt pointed out, ... | That's not how to use the "%n" specifier.
See [the C99 Standard](http://port70.net/~nsz/c/c99/n1256.html#7.19.6.1).
>
> n
>
> The argument shall be a pointer to signed integer into which is written the number of characters written to the output stream so far by this call to fprintf. No argument is converted, but... |
2,322,126 | $f$ is twice-differentiable function at the domain of $\Bbb R$
\begin{align}
\lim\_{h \to 0}{f(x+h)-f(x)-f'(x)h \over h^2}
&= \lim\_{h \to 0}\left[{f(x+h)-f(x) \over h^2} -{f'(x)h \over h^2}\right] \\
&= \lim\_{h \to 0}{f(x+h)-f(x) \over h}{1\over h} -\lim\_{h \to 0}{f'(x) \over h} \\
&= \lim\_{h \to 0}{f'(x)\over h}... | 2017/06/14 | [
"https://math.stackexchange.com/questions/2322126",
"https://math.stackexchange.com",
"https://math.stackexchange.com/users/442594/"
] | You made an error at this step:
$\lim\limits\_{h \to 0}{f(x+h)-f(x) \over h}{1\over h}=\lim\limits\_{h \to 0}{f'(x) \over h} $
Because by doing so you assume that $\lim\limits\_{h \to 0}{f(x+h)-f(x) \over h}$ and $\lim\limits\_{h \to 0}{1 \over h}$ both exists which is clearly false for the latter.
Now since $f(x)... | By the Taylor formula
$$f(x+h) = f(x) + f'(x)h + \frac{1}{2}f''(x) h^2 + o(h^2)$$
Now substitute and get
$$\lim\_{h \to 0} \frac{1}{h^2} (f(x+h) -f(x) - f'(x)h) = \lim\_{h \to 0} \frac{1}{h^2} (\frac{1}{2}f''(x) h^2 + o(h^2)) = \frac{1}{2}f''(x)$$ |
2,322,126 | $f$ is twice-differentiable function at the domain of $\Bbb R$
\begin{align}
\lim\_{h \to 0}{f(x+h)-f(x)-f'(x)h \over h^2}
&= \lim\_{h \to 0}\left[{f(x+h)-f(x) \over h^2} -{f'(x)h \over h^2}\right] \\
&= \lim\_{h \to 0}{f(x+h)-f(x) \over h}{1\over h} -\lim\_{h \to 0}{f'(x) \over h} \\
&= \lim\_{h \to 0}{f'(x)\over h}... | 2017/06/14 | [
"https://math.stackexchange.com/questions/2322126",
"https://math.stackexchange.com",
"https://math.stackexchange.com/users/442594/"
] | You made an error at this step:
$\lim\limits\_{h \to 0}{f(x+h)-f(x) \over h}{1\over h}=\lim\limits\_{h \to 0}{f'(x) \over h} $
Because by doing so you assume that $\lim\limits\_{h \to 0}{f(x+h)-f(x) \over h}$ and $\lim\limits\_{h \to 0}{1 \over h}$ both exists which is clearly false for the latter.
Now since $f(x)... | The first and main error is in
$$
\lim\_{h \to 0}\left[{f(x+h)-f(x) \over h^2} -{f'(x)h \over h^2}\right]
= \lim\_{h \to 0}{f(x+h)-f(x) \over h}{1\over h} -\lim\_{h \to 0}{f'(x) \over h}
$$
because neither limit in the right-hand side exists (unless you're in a very very special situation, which is not assumed in the h... |
10,394 | As I'm starting my career in analytics, I have to choose between SAS in-memory analytics and Openware and largely adopted R, which one should I choose now so that I will have good market value in short-term as well as long-term? | 2016/02/25 | [
"https://datascience.stackexchange.com/questions/10394",
"https://datascience.stackexchange.com",
"https://datascience.stackexchange.com/users/6558/"
] | Go for R. SAS is a monster and is not fun. Having said that your market value will be determined more by what you can and want to do and the general education level than just by this or that technology. | This all depends. SAS is great and is backed by the SAS Institute, meaning if you're working for an organization that has invested in SAS, you can contact the support team for anything funky happening with the software.
R is free and open source, and there are also organizations being created that are building on to a... |
10,394 | As I'm starting my career in analytics, I have to choose between SAS in-memory analytics and Openware and largely adopted R, which one should I choose now so that I will have good market value in short-term as well as long-term? | 2016/02/25 | [
"https://datascience.stackexchange.com/questions/10394",
"https://datascience.stackexchange.com",
"https://datascience.stackexchange.com/users/6558/"
] | You'll need both or even more for your "career in analytics". Start with SAS, SAS studio is intuitive and easy, once you are comfortable with the "stats" and looking for next level than is coming R in place.
SAS also have free courses for intro in stat and their platform.
[SAS free courses](http://support.sas.com/trai... | This all depends. SAS is great and is backed by the SAS Institute, meaning if you're working for an organization that has invested in SAS, you can contact the support team for anything funky happening with the software.
R is free and open source, and there are also organizations being created that are building on to a... |
10,394 | As I'm starting my career in analytics, I have to choose between SAS in-memory analytics and Openware and largely adopted R, which one should I choose now so that I will have good market value in short-term as well as long-term? | 2016/02/25 | [
"https://datascience.stackexchange.com/questions/10394",
"https://datascience.stackexchange.com",
"https://datascience.stackexchange.com/users/6558/"
] | Go for R. SAS is a monster and is not fun. Having said that your market value will be determined more by what you can and want to do and the general education level than just by this or that technology. | In my experience, there are a few things to consider here:
* What field you're going into
* What kinds of technology you believe you'll be working with
* What kinds of teams you believe you'll be working with
**Field**
This is a huge determiner. To my understanding, SAS is standard in finance, banking, some biostats... |
10,394 | As I'm starting my career in analytics, I have to choose between SAS in-memory analytics and Openware and largely adopted R, which one should I choose now so that I will have good market value in short-term as well as long-term? | 2016/02/25 | [
"https://datascience.stackexchange.com/questions/10394",
"https://datascience.stackexchange.com",
"https://datascience.stackexchange.com/users/6558/"
] | You'll need both or even more for your "career in analytics". Start with SAS, SAS studio is intuitive and easy, once you are comfortable with the "stats" and looking for next level than is coming R in place.
SAS also have free courses for intro in stat and their platform.
[SAS free courses](http://support.sas.com/trai... | In my experience, there are a few things to consider here:
* What field you're going into
* What kinds of technology you believe you'll be working with
* What kinds of teams you believe you'll be working with
**Field**
This is a huge determiner. To my understanding, SAS is standard in finance, banking, some biostats... |
10,394 | As I'm starting my career in analytics, I have to choose between SAS in-memory analytics and Openware and largely adopted R, which one should I choose now so that I will have good market value in short-term as well as long-term? | 2016/02/25 | [
"https://datascience.stackexchange.com/questions/10394",
"https://datascience.stackexchange.com",
"https://datascience.stackexchange.com/users/6558/"
] | Go for R. SAS is a monster and is not fun. Having said that your market value will be determined more by what you can and want to do and the general education level than just by this or that technology. | @ImperativelyAblative has many good points.
Adding to that, many companies, especially banks, that rooted in SAS have started to experiment with R. This is because of the cost saving and maturing enterprise support, think of RStudio Server and Cloudera. SAS is great, but it comes with a premium price tag (some may ar... |
10,394 | As I'm starting my career in analytics, I have to choose between SAS in-memory analytics and Openware and largely adopted R, which one should I choose now so that I will have good market value in short-term as well as long-term? | 2016/02/25 | [
"https://datascience.stackexchange.com/questions/10394",
"https://datascience.stackexchange.com",
"https://datascience.stackexchange.com/users/6558/"
] | You'll need both or even more for your "career in analytics". Start with SAS, SAS studio is intuitive and easy, once you are comfortable with the "stats" and looking for next level than is coming R in place.
SAS also have free courses for intro in stat and their platform.
[SAS free courses](http://support.sas.com/trai... | @ImperativelyAblative has many good points.
Adding to that, many companies, especially banks, that rooted in SAS have started to experiment with R. This is because of the cost saving and maturing enterprise support, think of RStudio Server and Cloudera. SAS is great, but it comes with a premium price tag (some may ar... |
43,966 | I've been testing some software in a server virtual environment and I've noticed I get a huge amount of CPU usage on the Interrupts process.
My question is, how does this relate to the virtual hardware platform as the rate is allot lower in a real system. Some how the hypervizor scheduler works hard to over come this... | 2009/07/22 | [
"https://serverfault.com/questions/43966",
"https://serverfault.com",
"https://serverfault.com/users/3190/"
] | Have you read the VM's CPU usage from the guest or the host? Guest CPU usage figures are inherently wrong.
Other than that make sure you've removed any unnecessary virtual hardware like floppies/serial ports etc. and make sure you're on the latest vmtools. | This VM wasn't created through a P2V migration by any chance? If so make sure that the latest VMware tools are installed and that there are no drivers left from the physical hardware or software related to the hardware such as management agents. |
43,966 | I've been testing some software in a server virtual environment and I've noticed I get a huge amount of CPU usage on the Interrupts process.
My question is, how does this relate to the virtual hardware platform as the rate is allot lower in a real system. Some how the hypervizor scheduler works hard to over come this... | 2009/07/22 | [
"https://serverfault.com/questions/43966",
"https://serverfault.com",
"https://serverfault.com/users/3190/"
] | This VM wasn't created through a P2V migration by any chance? If so make sure that the latest VMware tools are installed and that there are no drivers left from the physical hardware or software related to the hardware such as management agents. | In my years of working at home with W2003 server, Enterprise mostly, i found out that the hard part is to find answers, problems are there where you don't expect them. In this case i had msmpeng.exe shooting in the 100% during transfer files to the server and now it is interrupts when i want to read from the server. Th... |
43,966 | I've been testing some software in a server virtual environment and I've noticed I get a huge amount of CPU usage on the Interrupts process.
My question is, how does this relate to the virtual hardware platform as the rate is allot lower in a real system. Some how the hypervizor scheduler works hard to over come this... | 2009/07/22 | [
"https://serverfault.com/questions/43966",
"https://serverfault.com",
"https://serverfault.com/users/3190/"
] | Have you read the VM's CPU usage from the guest or the host? Guest CPU usage figures are inherently wrong.
Other than that make sure you've removed any unnecessary virtual hardware like floppies/serial ports etc. and make sure you're on the latest vmtools. | In my years of working at home with W2003 server, Enterprise mostly, i found out that the hard part is to find answers, problems are there where you don't expect them. In this case i had msmpeng.exe shooting in the 100% during transfer files to the server and now it is interrupts when i want to read from the server. Th... |
24,655,092 | I want to leverage chef-metal and chef-zero with my existing cookbooks and chef-repo (already leveraging berkshelf and vagrant for dev)
I started with the example provided at <https://github.com/opscode/chef-metal#vagrant>
I've got a vagrant\_linux.rb
```
require 'chef_metal_vagrant'
vagrant_box 'CentOS-6.4-x86... | 2014/07/09 | [
"https://Stackoverflow.com/questions/24655092",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/409784/"
] | You can pass :cookbook\_path that contains multiple paths as an Array like so: <https://github.com/opscode/ec-metal/blob/master/cookbooks/ec-harness/recipes/vagrant.rb#L12-L13>
```
with_chef_local_server :chef_repo_path => repo_path,
:cookbook_path => [ File.join(repo_path, 'cookbooks'),
File.join(repo_path, 'vend... | The "berks vendor" command is how I generally do that--use "berks vendor" and add the vendored path to your cookbook path. |
60,185,417 | Let's say we have a 5x5 matrix, filled with 0s.
```
myMatrix <- matrix(rep(0, 25), ncol = 5)
```
Now, let's pick a triplet of integers between 1 and 5.
```
triplet <- c(1,2,3)
```
For all combinations of this triplet we now add 1 in the matrix,
with this function:
```
addCombinationsToMatrix <- function(.matrix,... | 2020/02/12 | [
"https://Stackoverflow.com/questions/60185417",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7210250/"
] | Great question! This comes up in survey design, where you want a few different versions of the survey that each only contain a subset of the questions, but you want every pair (or t-tuple) of questions to have been asked at least once.
This is called **covering design**, and is a variant of the classic *set cover prob... | Here is an option using `data.table` to keep track of the matrix count and `RcppAlgos` to generate the combinations:
```
library(RcppAlgos)
library(data.table)
M <- 100 #5 #10 #100
sz <- 5 #3 #4 5
minpick <- 3 #1 #2
d <- integer(M)
system.time({
universe <- as.data.table(comboGeneral(M, 2L, nThreads=4L))[, coun... |
60,185,417 | Let's say we have a 5x5 matrix, filled with 0s.
```
myMatrix <- matrix(rep(0, 25), ncol = 5)
```
Now, let's pick a triplet of integers between 1 and 5.
```
triplet <- c(1,2,3)
```
For all combinations of this triplet we now add 1 in the matrix,
with this function:
```
addCombinationsToMatrix <- function(.matrix,... | 2020/02/12 | [
"https://Stackoverflow.com/questions/60185417",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7210250/"
] | Great question! This comes up in survey design, where you want a few different versions of the survey that each only contain a subset of the questions, but you want every pair (or t-tuple) of questions to have been asked at least once.
This is called **covering design**, and is a variant of the classic *set cover prob... | Since this question asks for algorithmic approaches to covering designs, I'll provide one that gives exact answers (aka the best possible design) using integer programming in R. For every single k-tuple that you are considering (k=3 for you, since you are selecting triplets), define a decision variable that takes value... |
67,163,630 | I'm using CSS transform: scale(0.6) to scale down a div. When the element is scaled down, it maintains its aspect ratio. However, in my case, this element needs to always have a height that will reach the bottom of the viewport. This means I need to adjust the height of the element while keeping its width and top posit... | 2021/04/19 | [
"https://Stackoverflow.com/questions/67163630",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/9983270/"
] | Since you want the div's height to stretch till bottom, you can make use of `window.innerHeight` here.
The new height can be calculated using the following formula :-
`newHeight = (viewportHeight - offsetTop)*(1/scaleValue)`
Putting in values it will come down to the following calculation :-
`newHeight = (window.in... | i see you position it from the top. i think that if you position it from bottom you will get what u want.
change top to bottom: 0px
change tranform-origin to transform-origin:bottom
and for calculating the height u could use 100VH instead of 100% |
19,457,031 | Hey does anyone know what it is wrong with the `chr` in this code, the first `chr` (`chr(event.Ascii):`). it just returns with a syntax error. I am writing a keylogger using pyHook. Thanks in advance.
```
import pyHook, pythoncom, sys, logging
file_log = 'C:\\Python\\log.txt'
def OnKeyboardEvent (event):
logging... | 2013/10/18 | [
"https://Stackoverflow.com/questions/19457031",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2891941/"
] | There are two errors in that section of code.
First, you are missing a closing parenthesis:
```
logging.basicConfig(filename=file_log, level=logging.DEBUG, format ='%(message)'
# ----^ -------^
```
Without that closing parenthesis, Python does not kno... | This line has a colon at the end of it.
```
chr(event.Ascii):
```
You should remove it. |
19,457,031 | Hey does anyone know what it is wrong with the `chr` in this code, the first `chr` (`chr(event.Ascii):`). it just returns with a syntax error. I am writing a keylogger using pyHook. Thanks in advance.
```
import pyHook, pythoncom, sys, logging
file_log = 'C:\\Python\\log.txt'
def OnKeyboardEvent (event):
logging... | 2013/10/18 | [
"https://Stackoverflow.com/questions/19457031",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2891941/"
] | This line has a colon at the end of it.
```
chr(event.Ascii):
```
You should remove it. | Use this code and enjoy..!!
```
import pyHook, pythoncom, sys, logging
file_log = 'D:\zzzz1.txt'
def OnKeyboardEvent(event):
logging.basicConfig(filename=file_log, level=logging.DEBUG, format='%(message)s')
chr(event.Ascii)
logging.log(10,chr(event.Ascii))
return True
hooks_manager = pyHook.HookManag... |
19,457,031 | Hey does anyone know what it is wrong with the `chr` in this code, the first `chr` (`chr(event.Ascii):`). it just returns with a syntax error. I am writing a keylogger using pyHook. Thanks in advance.
```
import pyHook, pythoncom, sys, logging
file_log = 'C:\\Python\\log.txt'
def OnKeyboardEvent (event):
logging... | 2013/10/18 | [
"https://Stackoverflow.com/questions/19457031",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2891941/"
] | There are two errors in that section of code.
First, you are missing a closing parenthesis:
```
logging.basicConfig(filename=file_log, level=logging.DEBUG, format ='%(message)'
# ----^ -------^
```
Without that closing parenthesis, Python does not kno... | Use this code and enjoy..!!
```
import pyHook, pythoncom, sys, logging
file_log = 'D:\zzzz1.txt'
def OnKeyboardEvent(event):
logging.basicConfig(filename=file_log, level=logging.DEBUG, format='%(message)s')
chr(event.Ascii)
logging.log(10,chr(event.Ascii))
return True
hooks_manager = pyHook.HookManag... |
46,478,697 | I would like to run `BasicLSTMCell` once, get result and see if I can reproduce results manually. However, I am stuck at executing `BasicLSTMCell` once. Here is my code:
```py
import tensorflow as tf
BATCH_SIZE = 7
SEQUENCE_LENGTH = 5
VECTOR_SIZE = 3
STATE_SIZE = 4
x = tf.placeholder(tf.float32, [BATCH_SIZE, SEQUENC... | 2017/09/28 | [
"https://Stackoverflow.com/questions/46478697",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1700890/"
] | *cell* is an object of BasicLSTMCell, which is a part of the graph to populate output and a new state.
Thanks for python Readability
```
cell(rnn_inputs[0], (init_state, init_state))
```
is actually:
```
cell.__call__(rnn_inputs[0], (init_state, init_state))
```
The cell call can be brought in front of tf.Sessio... | [You need to initialize all variables](https://www.tensorflow.org/versions/r1.0/programmers_guide/variables#initialization) with, for example, [`tf.global_variables_initializer()`](https://www.tensorflow.org/api_docs/python/tf/global_variables_initializer) (or restore them from a previously-trained graph) before you ca... |
55,530,907 | I have a customview:
```
public class GalleryView extends View implements View.OnClickListener {
private CallBackHandler callBackHandler;
Paint myPaint = new Paint();
public GalleryView(Context context, CallBackHandler callBackHandler) {
super(context);
this.callBackHandler = callBackHand... | 2019/04/05 | [
"https://Stackoverflow.com/questions/55530907",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1344545/"
] | You need to add this line inside on create :
```
yourView.setOnClickListener(this);
```
Basically, when you add this line You assign `OnClickListener` to your view using `setOnClickListener(this)` and that's how inside `onClick`, the onClick of the assigned `OnClickListener` is called. | You can do it by simply setting OnClickListener as below:
```
public class GalleryView extends View implements View.OnClickListener {
Paint myPaint = new Paint();
private CallBackHandler callBackHandler;
public GalleryView(Context context, CallBackHandler callBackHandler) {
this(context, null, ca... |
57,012,564 | Is it possible to define opacity in CSS by percentage (eg 30%) in CSS? does not seem to be working, right now I can only conduct it by decimal point.
<https://css-tricks.com/almanac/properties/o/opacity/>
```
.test{
opacity: 0.3;
}
```
**Intended Goal:**
```
.test{
opacity: 30%;
}
``` | 2019/07/12 | [
"https://Stackoverflow.com/questions/57012564",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11736013/"
] | If you really want to use a 0 to 100 range, you can calculate the decimal automatically:
```css
element {
opacity: calc(40 / 100);
}
```
or you can use a variable to make it clearer:
```css
element {
--opacity-percent: 40;
opacity: calc(var(--opacity-percent) / 100);
}
```
But both of these are less clear t... | According to the docs, it has to be a number between 0 and 1.
<https://developer.mozilla.org/en-US/docs/Web/CSS/opacity>
<https://www.w3schools.com/cssref/css3_pr_opacity.asp>
I'm not sure why you would want a percent instead of this number considering they are the same thing (just divide by 100). |
57,012,564 | Is it possible to define opacity in CSS by percentage (eg 30%) in CSS? does not seem to be working, right now I can only conduct it by decimal point.
<https://css-tricks.com/almanac/properties/o/opacity/>
```
.test{
opacity: 0.3;
}
```
**Intended Goal:**
```
.test{
opacity: 30%;
}
``` | 2019/07/12 | [
"https://Stackoverflow.com/questions/57012564",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11736013/"
] | Yes it's possible if you consider `filter`
```css
.box {
filter:opacity(30%);
background:red;
height:20px;
}
```
```html
<div class="box">
</div>
```
You will even have better performance because:
>
> This function is similar to the more established opacity property; the difference is that with filters... | According to the docs, it has to be a number between 0 and 1.
<https://developer.mozilla.org/en-US/docs/Web/CSS/opacity>
<https://www.w3schools.com/cssref/css3_pr_opacity.asp>
I'm not sure why you would want a percent instead of this number considering they are the same thing (just divide by 100). |
57,012,564 | Is it possible to define opacity in CSS by percentage (eg 30%) in CSS? does not seem to be working, right now I can only conduct it by decimal point.
<https://css-tricks.com/almanac/properties/o/opacity/>
```
.test{
opacity: 0.3;
}
```
**Intended Goal:**
```
.test{
opacity: 30%;
}
``` | 2019/07/12 | [
"https://Stackoverflow.com/questions/57012564",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11736013/"
] | Using a percentage is fully valid css, according to the spec:
<https://developer.mozilla.org/en-US/docs/Web/CSS/opacity#Values>
>
> `alpha-value`
> A `number` in the range 0.0 to 1.0, inclusive, or a `percentage` in the range 0% to 100%, inclusive, representing the opacity of the channel (that is, the value of its a... | According to the docs, it has to be a number between 0 and 1.
<https://developer.mozilla.org/en-US/docs/Web/CSS/opacity>
<https://www.w3schools.com/cssref/css3_pr_opacity.asp>
I'm not sure why you would want a percent instead of this number considering they are the same thing (just divide by 100). |
57,012,564 | Is it possible to define opacity in CSS by percentage (eg 30%) in CSS? does not seem to be working, right now I can only conduct it by decimal point.
<https://css-tricks.com/almanac/properties/o/opacity/>
```
.test{
opacity: 0.3;
}
```
**Intended Goal:**
```
.test{
opacity: 30%;
}
``` | 2019/07/12 | [
"https://Stackoverflow.com/questions/57012564",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11736013/"
] | If you really want to use a 0 to 100 range, you can calculate the decimal automatically:
```css
element {
opacity: calc(40 / 100);
}
```
or you can use a variable to make it clearer:
```css
element {
--opacity-percent: 40;
opacity: calc(var(--opacity-percent) / 100);
}
```
But both of these are less clear t... | No, [decimals only](https://www.w3.org/TR/2018/REC-css-color-3-20180619/#transparency).
>
> Any values outside the range 0.0 (fully transparent) to 1.0 (fully opaque) will be clamped to this range.
>
>
> |
57,012,564 | Is it possible to define opacity in CSS by percentage (eg 30%) in CSS? does not seem to be working, right now I can only conduct it by decimal point.
<https://css-tricks.com/almanac/properties/o/opacity/>
```
.test{
opacity: 0.3;
}
```
**Intended Goal:**
```
.test{
opacity: 30%;
}
``` | 2019/07/12 | [
"https://Stackoverflow.com/questions/57012564",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11736013/"
] | Yes it's possible if you consider `filter`
```css
.box {
filter:opacity(30%);
background:red;
height:20px;
}
```
```html
<div class="box">
</div>
```
You will even have better performance because:
>
> This function is similar to the more established opacity property; the difference is that with filters... | No, [decimals only](https://www.w3.org/TR/2018/REC-css-color-3-20180619/#transparency).
>
> Any values outside the range 0.0 (fully transparent) to 1.0 (fully opaque) will be clamped to this range.
>
>
> |
57,012,564 | Is it possible to define opacity in CSS by percentage (eg 30%) in CSS? does not seem to be working, right now I can only conduct it by decimal point.
<https://css-tricks.com/almanac/properties/o/opacity/>
```
.test{
opacity: 0.3;
}
```
**Intended Goal:**
```
.test{
opacity: 30%;
}
``` | 2019/07/12 | [
"https://Stackoverflow.com/questions/57012564",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11736013/"
] | Using a percentage is fully valid css, according to the spec:
<https://developer.mozilla.org/en-US/docs/Web/CSS/opacity#Values>
>
> `alpha-value`
> A `number` in the range 0.0 to 1.0, inclusive, or a `percentage` in the range 0% to 100%, inclusive, representing the opacity of the channel (that is, the value of its a... | No, [decimals only](https://www.w3.org/TR/2018/REC-css-color-3-20180619/#transparency).
>
> Any values outside the range 0.0 (fully transparent) to 1.0 (fully opaque) will be clamped to this range.
>
>
> |
57,012,564 | Is it possible to define opacity in CSS by percentage (eg 30%) in CSS? does not seem to be working, right now I can only conduct it by decimal point.
<https://css-tricks.com/almanac/properties/o/opacity/>
```
.test{
opacity: 0.3;
}
```
**Intended Goal:**
```
.test{
opacity: 30%;
}
``` | 2019/07/12 | [
"https://Stackoverflow.com/questions/57012564",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11736013/"
] | If you really want to use a 0 to 100 range, you can calculate the decimal automatically:
```css
element {
opacity: calc(40 / 100);
}
```
or you can use a variable to make it clearer:
```css
element {
--opacity-percent: 40;
opacity: calc(var(--opacity-percent) / 100);
}
```
But both of these are less clear t... | Yes it's possible if you consider `filter`
```css
.box {
filter:opacity(30%);
background:red;
height:20px;
}
```
```html
<div class="box">
</div>
```
You will even have better performance because:
>
> This function is similar to the more established opacity property; the difference is that with filters... |
57,012,564 | Is it possible to define opacity in CSS by percentage (eg 30%) in CSS? does not seem to be working, right now I can only conduct it by decimal point.
<https://css-tricks.com/almanac/properties/o/opacity/>
```
.test{
opacity: 0.3;
}
```
**Intended Goal:**
```
.test{
opacity: 30%;
}
``` | 2019/07/12 | [
"https://Stackoverflow.com/questions/57012564",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11736013/"
] | Using a percentage is fully valid css, according to the spec:
<https://developer.mozilla.org/en-US/docs/Web/CSS/opacity#Values>
>
> `alpha-value`
> A `number` in the range 0.0 to 1.0, inclusive, or a `percentage` in the range 0% to 100%, inclusive, representing the opacity of the channel (that is, the value of its a... | If you really want to use a 0 to 100 range, you can calculate the decimal automatically:
```css
element {
opacity: calc(40 / 100);
}
```
or you can use a variable to make it clearer:
```css
element {
--opacity-percent: 40;
opacity: calc(var(--opacity-percent) / 100);
}
```
But both of these are less clear t... |
57,012,564 | Is it possible to define opacity in CSS by percentage (eg 30%) in CSS? does not seem to be working, right now I can only conduct it by decimal point.
<https://css-tricks.com/almanac/properties/o/opacity/>
```
.test{
opacity: 0.3;
}
```
**Intended Goal:**
```
.test{
opacity: 30%;
}
``` | 2019/07/12 | [
"https://Stackoverflow.com/questions/57012564",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/11736013/"
] | Using a percentage is fully valid css, according to the spec:
<https://developer.mozilla.org/en-US/docs/Web/CSS/opacity#Values>
>
> `alpha-value`
> A `number` in the range 0.0 to 1.0, inclusive, or a `percentage` in the range 0% to 100%, inclusive, representing the opacity of the channel (that is, the value of its a... | Yes it's possible if you consider `filter`
```css
.box {
filter:opacity(30%);
background:red;
height:20px;
}
```
```html
<div class="box">
</div>
```
You will even have better performance because:
>
> This function is similar to the more established opacity property; the difference is that with filters... |
3,791,677 | I am using [MVVM Foundation](http://mvvmfoundation.codeplex.com/) but I think its quite straight-forward and not really framework specific. My setup is as follows:
* StartViewModel - has a ExitCommand that returns a RelayCommand/ICommand
```
public ICommand ExitCommand {
get { return _exitCommand ?? (_exitCommand... | 2010/09/24 | [
"https://Stackoverflow.com/questions/3791677",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/292291/"
] | First, read as much as you can stomach on MVVM, e.g. [WPF Apps With The Model-View-ViewModel Design Pattern](http://msdn.microsoft.com/en-us/magazine/dd419663.aspx) on MSDN. Once you understand the basic principles driving it the answer will seem more reasonable.
Basically you want to keep your View (UI) and ViewModel... | you can implement an CloseEvent in your StartViewModel. in your StartView you have to register this CloseEvent. when you Raise your closeevent from your VM then, your View recognize that it has to close your app/window. |
30,547,638 | I'm trying to submit my first iphone app to the app store but when click on validate or submit to App store I get this Error :
Itunes store operation failed.
the network connection was lost.
can anyone help me please? | 2015/05/30 | [
"https://Stackoverflow.com/questions/30547638",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3972984/"
] | I assume that `m_parts` is a vector of pointers to the common base class?
Then you need to [*downcast*](http://www.bogotobogo.com/cplusplus/upcasting_downcasting.php#Downcasting) to the correct class, like
```
static_cast<ActualClassThisIs*>(m_parts[i])->getThrust();
```
Note that this only works if the class inher... | Your last part,
>
> How do I declare a vector within Rocket that is able to contain all subclasses of RocketPart and in the main how do I call calcTWR(), so that it actually gives back the total thrust, regardless of the contents of the vector?
>
>
>
Could be done with something along these lines:
```
class IPa... |
39,611,708 | so i have 3 tables in MySql
events
```
| ID | event_name |
-------------------
| 1 | test |
| 2 | test2 |
| 3 | test3 |
```
sp\_events
```
| ID | event_ID | show_in_grid |
--------------------------------
| 5 | 1 | 1 |
| 6 | 2 | 1 |
```
sp\_event\_dates
`... | 2016/09/21 | [
"https://Stackoverflow.com/questions/39611708",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1680768/"
] | Just use a GROUP BY + MIN:
```
SELECT events.id
,events.event_name
,min(sp_event_dates.start_date) As start_date
FROM events
JOIN sp_events
ON sp_events.event_ID=events.ID
JOIN sp_event_dates ON sp_event_dates.sp_event_ID = sp_events.ID
WHERE sp_events.show_in_grid=1
GROUP BY events.id
,events.event_name
`... | You need `groupby` event id
**SQL:**
```
SELECT
events.ID,
events.event_name,
sp_event_dates.start_date
FROM
`events`
INNER JOIN sp_events
ON sp_events.event_ID = events.ID
INNER JOIN sp_event_dates
ON sp_event_dates.`sp_event_ID` = sp_events.`ID`
WHERE sp_events.show_in_grid = 1
GROUP BY e... |
7,858,228 | This is just an academic question (I would never do this in real code):
**If I were to use shared\_ptr<> universally in my code, would the behavior be equivalent to a gc-collected language like Java?**
If not, how would the behavior be different from a gc-embedded language? Which C++ construct would yield equivalent ... | 2011/10/22 | [
"https://Stackoverflow.com/questions/7858228",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/975129/"
] | No, there'd be a couple of important differences:
* You would get a memory leak any time you have a cyclic reference. A garbage collector can handle cycles, ref-counting can't.
* You would avoid any stalls or pauses because no garbage collection ever occurs. On the other hand, you'd likely spend more total CPU time cl... | Garbage collection happens whenever the GC decides that it should. `shared_ptr`s are not collected. An object managed by a `shared_ptr` will only *ever* be destroyed in the destructor of a `shared_ptr`. And therefore, you know exactly when memory can and can *not* be freed.
You still have control over when memory goes... |
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