instruction stringlengths 0 30k ⌀ |
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I have a secondary Exchange mailbox configured on my iPhone using IMAP. This all appears to work fine except when a message is deleted on the phone, it still shows normally in Outlook. It does not seem to matter what I set the "remove deleted messages" setting to on the phone.
I understand this is due to a combinati... |
A jump table can be either an array of pointers to functions or an array of machine code jump instructions. If you have a relatively static set of functions (such as system calls or virtual functions for a class) then you can create this table once and call the functions using a simple index into the array. This woul... |
A jump table, also known as a branch table, is a series of instructions, all unconditionally branching to another point in code.
You can think of them as a switch (or select) statement where all the cases are filled:
MyJump(int c)
{
switch(state)
{
case 0:
goto fu... |
You might need something more complicated than a regular expression. Web pages often have angle brackets that aren't part of a tag, like this:
<div>5 < 7</div>
Stripping the tags with regex will return the string "5 " and treat
< 7</div>
as a single tag and strip it out.
I suggest looking for a... |
Use [BeautifulSoup](http://www.crummy.com/software/BeautifulSoup/)! It's perfect for this, where you have incoming markup of dubious virtue and need to get something reasonable out of it. Just pass in the original text, extract all the string tags, and join them. |
[List of .NET Framework versions][1].
[1]: http://en.wikipedia.org/wiki/.NET_Framework_version_list |
List of ASP.NET Versions? |
|asp.net| |
Thanks to a Q&A on stackoverflow I just found out how to determine the installed version on my hosting provider's server. Now I need to know what that number means.
Using <%=Environment.Version%> on my local machine returns 2.0.50727.3053. Which I've found to mean v3.5 SP1.
Can someone give me a list of the versi... |
Thanks to a Q&A on stackoverflow I just found out how to determine the installed version on my hosting provider's server. Now I need to know what that number means.
Using <%=Environment.Version%> on my local machine returns 2.0.50727.3053.
Can someone give me a list of the version 1, 1.1, 2, ect.. to the actual E... |
Is it possible to convert projects wizard created for MSVS 2005 to MSVS 2008 format autom |
|visual-studio|templates| |
I have a bunch of wizards created for MSVS 2005. Is it possible to convert them to MSVS 2008 format automatically? |
Is it possible to convert projects wizard created for MSVS 2005 to MSVS 2008 format automatically |
Thanks!
I just dropped <%=Environment.Version%> on a page and got 2.0.50727.3053, which from what I found is v3.5 SP1. |
Thanks!
I just dropped <%=Environment.Version%> on a page and got 2.0.50727.3053 |
Just a note, LoginGenerator and SaltedLoginGenerator have been superseded by Restful Authentication and are unsupported on newer Rails releases -- dont waste any time on them, though they were great at the time.
|
@Vaibhav
The [Using Google Analytics with rich (managed) web applications in Silverlight](http://blogs.msdn.com/jeffwilcox/archive/2007/10/01/using-google-analytics-with-rich-managed-web-applications-in-silverlight.aspx) article is very interesing but is more focused on how to get your Silverlight app to send messag... |
I'm running some [JMeter][1] tests against a Java process to determine how responsive a web application is under load (500+ users). JMeter will give the response time for each web request, and I've written a script to ping the Tomcat Manager every X seconds which will get me the current size of the JVM heap.
I'd lik... |
Optimizing a LINQ query. |
|linq|linq-to-sql|optimization| |
I have a query that looks like this:
public IList<Post> FetchLatestOrders(int pageIndex, int recordCount)
{
DatabaseDataContext db = new DatabaseDataContext();
return (from o in db.Orders
orderby o.CreatedDate descending
select o).Skip(pageIndex * recordCount).Take(recordCount).ToList();
}
... |
Optimizing a LINQ to SQL query. |
I have a query that looks like this:
public IList<Post> FetchLatestOrders(int pageIndex, int recordCount)
{
DatabaseDataContext db = new DatabaseDataContext();
return (from o in db.Orders
orderby o.CreatedDate descending
select o).Skip(pageIndex * recordCount).Take(recordCount).ToList();
}
... |
|linq|optimization|linq-to-sql| |
I have a query that looks like this:
public IList<Post> FetchLatestOrders(int pageIndex, int recordCount)
{
DatabaseDataContext db = new DatabaseDataContext();
return (from o in db.Orders
orderby o.CreatedDate descending
select o).Skip(pageIndex * recordCount).Take(recordCount).ToList();
}
... |
It looks you can still pass arguments to the constructor, here's my test code:
<?php
class Test {
function __construct($x) {
echo $x;
}
}
$class = 'Test';
$object = new $class('test'); // echoes "test"
?>
That is what you meant, right?
So the on... |
Or you can just hide the option you don't want to show...
function hideSelected($one, $two)
{
$one.bind('change', function()
{
var val = $one.val();
$two.find('option:not(:visible)').show().end()
.find('option[value='+val+']').hide().end();
})
}
hideSelec... |
Or you can just hide the option you don't want to show...
function hideSelected($one, $two)
{
$one.bind('change', function()
{
var val = $one.val();
$two.find('option:not(:visible)').show().end()
.find('option[value='+val+']').hide().end();
})
}
hideSelec... |
Hbase / Hadoop Query Help |
|hadoop|hbase| |
I'm working on a project with a friend that will utilize Hbase to store it's data. Are there any good query examples? I seem to be writing a ton of Java code to iterate through lists of RowResult's when, in SQL land, I could write a simple query. Am I missing something? Or is Hbase missing something? |
Some suggestions:
- No write permission (get permission from the owner, or take it if you're an Administrator)
- File is locked (close any program that may have the file open, then reboot if that doesn't help)
- File has the read-only DOS attribute set (unset it from file Properties window, or with `attrib -... |
Some suggestions:
- No write permission (get permission from the owner, or take it if you're an Administrator)
- File is locked (close any program that may have the file open, then reboot if that doesn't help)
- File has the read-only DOS attribute set (unset it from file Properties window, or with `attrib -... |
Some suggestions:
- No write permission (get permission through Security tab on file Properties window; you must be the file owner or an Administrator)
- File is locked (close any program that may have the file open, then reboot if that doesn't help)
- File has the read-only DOS attribute set (unset it from ... |
Is it a List<string>? If so then this should work:
List<string> stringList = new List<string>();
// ... some list populating code here ...
string[] stringArray = stringList.Where(a => a == Foo.Bar).Distinct().ToArray(); |
This should work if you want to use the fluent pattern:
string[] arrayStrings = fooList.Select(a => a.Bar).Distinct().ToArray(); |
Row isn't an array unless there are multiple Row elements. It is annoying. You have to do something like this, but I haven't written AS3 in a while so I forget if there's an exists function.
if (exists(event.result.DataTable) && exists(event.result.DataTable.Row)){
if (exists(event.result.DataTable.Row.le... |
I don't know about Java, but I remember running into [Quercus][1] a while ago. It's a 100% Java interpreter for PHP code.
So yes, you could have PHP templates on your Java app. **Update**: see [Quercus: PHP in Java][2] for more info.
[1]: http://www.caucho.com/resin-3.0/quercus/
[2]: http://caucho.com/resi... |
I don't know much about Java, but I remember running into [Quercus][1] a while ago. It's a 100% Java interpreter for PHP code.
So yes, you could have PHP templates on your Java app. **Update**: see [Quercus: PHP in Java][2] for more info.
[1]: http://www.caucho.com/resin-3.0/quercus/
[2]: http://caucho.com... |
**[@Konrad](http://stackoverflow.com/questions/38746/how-to-detect-file-ends-in-newline#39185)**: tail does not return an empty line. I made a file that has some text that doesn't end in newline and a file that does. Here is the output from tail:
$ cat test_no_newline.txt
this file doesn't end in newline$
... |
**[@Konrad](http://stackoverflow.com/questions/38746/how-to-detect-file-ends-in-newline#39185)**: tail does not return an empty line. I made a file that has some text that doesn't end in newline and a file that does. Here is the output from tail:
$ cat test_no_newline.txt
this file doesn't end in newline$
... |
I think WPF can greatly improve user experience.
However there are no much business oriented controls out there which means you need to do a lot by yourself.
As for designers I think it's really hard to find WPF designer now days, it still would be a dedicated programmer rather then design-only guy.
I ho... |
Use `top -b` (and other switches if you want different outputs). It will just dump to stdout instead of jumping into a curses window. |
I believe the error lies in the mark up that the color picker is generating. I saved the page and removed that code for the color picker and it renders fine in IE/FF/SF. |
What are the Agile tools for PHP? |
|php| |
- Unit Testing
- Mocking
- Inversion of Control
- Refactoring
- Object Relational Mapping
- Others?
I have found [simpletest][1] for unit testing and mocking and, though it leaves much to be desired, it kind-of sort of works.
I have yet to find any reasonable Inversion of Control framework (ther... |
How about [AIML][1]? Not so much a programming language, but you get instant fulfillment and because its all about artificial intelligence it will likely trigger his (her?) sense of excitement.
[1]: http://www.alicebot.org/aiml.html |
Python package [VPython][2] -- 3D Programming for Ordinary Mortal ([video tutorial][1]).
[Code example:][3]
from visual import *
floor = box (pos=(0,0,0), length=4, height=0.5, width=4, color=color.blue)
ball = sphere (pos=(0,4,0), radius=1, color=color.red)
ball.velocity = vector(0,-... |
I would start by reading this article:
<http://decipherinfosys.wordpress.com/2007/03/27/using-stored-procedures-vs-dynamic-sql-generated-by-orm/>
Here is a speed test between the two:
<http://www.blackwasp.co.uk/SpeedTestSqlSproc.aspx>
|
For most people, the best way to convince them is to "show them the proof." In this case, I would create a couple basic test cases to retrieve the same set of data, and then time how long it takes using stored procedures versus NHibernate. Once you have the results, hand it over to them and most skeptical people should... |
Round 1 - You can start a profiler trace and compare the execution times. |
There is now Grails plugin that enables the use of multiple datasources directly with Grails' GORM layer:
http://burtbeckwith.com/blog/?p=70 |
Measure it, but in a non-micro-benchmark, i.e. something that represents real operations in your system. Even if there would be a tiny performance benefit for a stored procedure it will be insignificant against the other costs your code is incurring: actually retrieving data, converting it, displaying it, etc. Not to m... |
I don't know what ruby would do if you used extended UTF8 characters as identifiers in your source code, but I know what I would do, which would be to slap you upside the back of the head and tell you DON'T DO THAT |
Read the paper: **Porikli, Fatih, Oncel Tuzel, and Peter Meer. “Covariance Tracking Using Model Update Based
on Means on Riemannian Manifolds”. (2006) IEEE Computer Vision and Pattern Recognition.**
I was successfully able to detect overlapping regions in images captured from adjacent webcams using the technique pr... |
[Here](http://pimpmysafari.com/plugins/keywurl) is a Safari plugin whereby you can customize it to search other sites. May work with Stack Overflow (I haven't tried it). Check out that site too for other Safari plugins. |
Best method to get objects from a BlockingQueue in a concurrent program? |
|java|concurrency| |
What is the best method to get objects out of a BlockingQueue, in a concurrent program, without hitting a race condition? I'm currently doing the following and I'm not convinced it is the best method:
BlockingQueue<Violation> vQueue;
/*
in the constructor I pass in a BlockingQueue object
full o... |
To quote the great authors of [SICP](http://www.amazon.com/Structure-Interpretation-Computer-Programs-Engineering/dp/0262011530/sr=8-1/qid=1163785017?ie=UTF8&s=books),
_Programs must be written for people to read, and only incidentally for machines to execute_
I prefer to have both methods 1 and 2 at hand. Using... |
> @Peter Meyer
> You get the idea. I think going as loosely coupled as possible is a good thing, but maybe I was getting a bit carried away! :)
Errr... yeah... I think the `IStuffSmallEnoughToBeLostInAHaystack` kind of is a red flag :-) |
What to do about ScanAlert? |
|performance|security| |
One of my clients uses McAfee ScanAlert (i.e., HackerSafe). It basically hits the site with about 1500 bad requests a day looking for security holes. Since it demonstrates malicious behavior it is tempting to just block it after a couple bad requests, but maybe I should let it exercise the UI. Is it a true test if I ... |
I've always done it with a function like this:
public function keyExists(myCollection as collection, sKey as string) as Boolean
on error goto handleerror:
dim val as variant
val = myCollection(sKey)
keyExists = true
exit sub
handleerror:
keyExists = fa... |
Loading a JSON |
|php|json| |
I've been using PHP for too long, but I'm new to JavaScript integration in some places. I'm trying to find the fastest way to pass database information into a page where it can be modified and displayed dynamically in JavaScript. Right now, I'm looking at loading a JSON with PHP echo statements because it's fast and ef... |
Loading JSON with PHP |
If I get this right, you want a vector that is normal to the screen plane, but in world coordinates?
In that case you want to INVERT the transformation from World -> Screen and do Screen -> World of (0,0,-1) or (0,0,1) depending on which axis the screen points down.
Since the ModelView matrix is just a rotation m... |
One gotcha I have found is where two objects contain references to each other (one example being a parent/child relationship with a convenience method on the parent to get all children).
These sorts of things are fairly common when doing Hibernate mappings for example.
If you include both ends of the relationship... |
It means outer join, a simple = means inner join.
*= is LEFT JOIN and =* is RIGHT JOIN.
(or vice versa, I keep forgetting since I'm not using it any more, and Google isn't helpful when searching for *=) |
You can edit the default template for excel -
There is a file called Book.xlt in the XLSTART directory, normally located at "C:\Program Files\Microsoft Office\Office\XLStart\"
You should be able to add a macro called Workbook_Open
Private Sub Workbook_Open()
If ActiveWorkBook.Sheets(1).Range("A1") = ""
... |
To answer your questions one by one.
Get v2.0 of the CTP. I have used 1.0 and 2.0 and have not found any stability issues with the later version and it has more [functionality][1].
The best way to get started is to learn ***three*** basic commands and start playing with it.
**Step 1 - Discover the available c... |
Some suggestions:
- No write permission (get permission through Security tab on file Properties window; you must be the file owner or an Administrator)
- File is locked (close any program that may have the file open, then reboot if that doesn't help)
- File has the read-only DOS attribute set (unset it from ... |
Some suggestions:
- No write permission (get permission through Security tab on file Properties window; you must be the file owner or an Administrator)
- File is locked (close any program that may have the file open, then reboot if that doesn't help)
- File has the read-only DOS attribute set (unset it from ... |
As well as the answers supplied above, one small advantage of splinting up your code into modules (separate files) is that if you have to have any global variables, you can limit their scope to a single module by the use of the key word 'static'. (You could also apply this to functions). Note that this use of 'static... |
Actually, auto-completion does work for `.`. The completion options are found by calling `#methods` on the object. You can see this for yourself by overriding `Object.methods`:
>> def Object.methods; ["foo", "bar"]; end
=> nil
>> Object.[TAB]
Object.foo Object.bar
>> Object.
Note that t... |
Google Suggestish text box |
|c#|windows-app| |
What would be the easiest way to develop a text box that remembers the last x number of entries that were put into it. This is a standalone app written with C#. |
What would be the best way to develop a text box that remembers the last x number of entries that were put into it. This is a standalone app written with C#. |
|c#|winforms| |
Try this:
> public static int? ParseNullableInt(this string value)
{
int intValue;
if (int.TryParse(value, out intValue))
return intValue;
return null;
} |
Don't forget about integrity here. There are forgery attacks against out-of-the-box crypto when the attacker doesn't know the key, but can manipulate the ciphertext. These can be particularly nasty when:
* encrypting short strings,
* with known substrings
That's exactly the case for credit cards. So using Syst... |
How to parse a string into a nullable int in C# (.NET 3.5) |
|c#|.net-3.5|string|nullable|parsing| |
I'm wanting to parse a string into a nullable int in C#. ie. I want to get back either the int value of the string or null if it can't be parsed.
I was kind of hoping that this would work
int? val = stringVal as int?;
But that won't work, so the way I'm doing it now is I've written this extension method
... |
|c#|.net-3.5|string|parsing|nullable| |
I'm wanting to parse a string into a nullable int in C#. ie. I want to get back either the int value of the string or null if it can't be parsed.
I was kind of hoping that this would work
int? val = stringVal as int?;
But that won't work, so the way I'm doing it now is I've written this extension method
... |
Int32.TryParse is probably a tad easier:
public static int? ToNullableInt32(this string s)
{
int i;
if (Int32.TryParse(s, out i)) return i;
return null;
} |
Benchmark it yourself. Write a testbed class that executes a sampled stored procedure a few hundred times, and run the NHibernate code the same amount of times. Compare the average and median execution time of each method. |
It is just as fast if the query is the same each time. Sql Server 2005 caches query plans at the level of each statement in a batch, regardless of where the SQL comes from.
The long-term difference might be that stored procedures are many, many times easier for a DBA to manage and tune, whereas hundreds of differen... |
I've had this argument many times over.
Almost always I end up grabbing a really good dba, and running a proc and a piece of code with the profiler running, and get the dba to show that the results are so close its negligible. |
Off the top of my head, I'd use the /proc filesystem view of the system state - Look at _man 5 proc_ to see the format of the entry for /proc/PID/stat, which contains total CPU usage information, and use /proc/stat to get global system information. To obtain "current time" usage, you probably really mean "CPU used in t... |
Measure it.
Really, any discussion on this topic is probably futile until you've measured it. |
Image library that will auto-crop |
|.net|image-manipulation| |