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Difference between __dirname and ./ in Node.js - GeeksforGeeks | 14 Feb, 2020
Working with any technology requires to interact with files and directories. Files and directories maintain a tree structure for easy access. Working with Node.js also requires accessing files using the file path which can be obtained using different commands. There are two ways of getting the current dire... | [
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"text": "Working with any technology requires to interact with files and directories. Files and directories maintain a tree structure for easy access. Working with Node.js ... |
Feature Engineering on Date-Time Data | by Pararawendy Indarjo | Towards Data Science | According to Wikipedia, feature engineering refers to the process of using domain knowledge to extract features from raw data via data mining techniques. These features can then be used to improve the performance of machine learning algorithms.
Feature engineering does not necessarily have to be fancy though. One simpl... | [
{
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"text": "According to Wikipedia, feature engineering refers to the process of using domain knowledge to extract features from raw data via data mining techniques. These features can then be used to improve the performance of machine learning algorithms."
},
{
... |
GWT - Create Application | As power of GWT lies in Write in Java, Run in JavaScript, we'll be using Java IDE Eclipse to demonstrate our examples.
Let's start with a simple HelloWorld application −
The first step is to create a simple Web Application Project using Eclipse IDE. Launch project wizard using the option Google Icon > New Web Applicat... | [
{
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"text": "As power of GWT lies in Write in Java, Run in JavaScript, we'll be using Java IDE Eclipse to demonstrate our examples."
},
{
"code": null,
"e": 2193,
"s": 2142,
"text": "Let's start with a simple HelloWorld application −"
},
{
... |
Instance Segmentation with Mask R-CNN | Towards Data Science | Object Detection models such as YOLO, R-CNN help us to draw a bounding box surrounding the objects, and the Instance Segmentation provides us the pixel-wise masks for each object in the image. One question may arise that why we need pixel by pixel location?
If we just use object detection in the self -driving cars then... | [
{
"code": null,
"e": 430,
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"text": "Object Detection models such as YOLO, R-CNN help us to draw a bounding box surrounding the objects, and the Instance Segmentation provides us the pixel-wise masks for each object in the image. One question may arise that why we need pixel by pixel locatio... |
AI-powered Indian license plate detector. | by Sarthak Vajpayee | Towards Data Science | Inspiration: The guy who hit my car and got away with it!
Backstory: After a memorable evening with friends as we were about to leave for our home there was something that made that evening even more memorable, a huge dent in my car’s front bumper, seemed it was hit by another vehicle, but who to blame? There was no on... | [
{
"code": null,
"e": 229,
"s": 171,
"text": "Inspiration: The guy who hit my car and got away with it!"
},
{
"code": null,
"e": 898,
"s": 229,
"text": "Backstory: After a memorable evening with friends as we were about to leave for our home there was something that made that even... |
Java Program to display a prime number less than the given number | Let’s say the value you have set is 20 and you have to display a prime number less than this value i.e. 19 in this case.
The following is an example that displays a prime number less than the given number −
Live Demo
public class Demo {
public static void main(String[] args) {
int val = 20;
boolean[] is... | [
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"text": "Let’s say the value you have set is 20 and you have to display a prime number less than this value i.e. 19 in this case."
},
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"text": "The following is an example that displays a prime number less... |
Requests - SSL Certification | SSL certificate is a security feature that comes with secure urls. When you use Requests library, it also verifies SSL certificates for the https URL given. SSL verification is enabled by default in the requests module and will throw an error if the certificate is not present.
Following is the example of working with s... | [
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"text": "SSL certificate is a security feature that comes with secure urls. When you use Requests library, it also verifies SSL certificates for the https URL given. SSL verification is enabled by default in the requests module and will throw an error if the cer... |
Plotting in parallel with matplotlib and python | by Paul Gavrikov | Towards Data Science | This is yet another post on how to speed up matplotlib. And it’s not like I am ranting against matplotlib. In fact, it is a daily driver in my projects. But sometimes you need that little extra performance.
Here’s one example. For one of my studies, I had to create plenty of violin plots. For those unfamiliar with them... | [
{
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"text": "This is yet another post on how to speed up matplotlib. And it’s not like I am ranting against matplotlib. In fact, it is a daily driver in my projects. But sometimes you need that little extra performance."
},
{
"code": null,
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"... |
Deep Quantile Regression in Tensorflow | by Jacob Zweig | Towards Data Science | A key challenge in deep learning is how to get estimates on the bounds of predictors. Quantile regression, first introduced in the 70’s by Koenker and Bassett [1], allows us to estimate percentiles of the underlying conditional data distribution even in cases where they are asymmetric, giving us insight on the relation... | [
{
"code": null,
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"text": "A key challenge in deep learning is how to get estimates on the bounds of predictors. Quantile regression, first introduced in the 70’s by Koenker and Bassett [1], allows us to estimate percentiles of the underlying conditional data distribution even in c... |
DAX Text - VALUE function | Converts a text string that represents a number to a number in numeric data type.
VALUE (<text>)
text
The text to be converted.
A number.
The text parameter for the DAX VALUE function can be a constant, a number, a date, or a time in DAX data types.
If the text is not in one of these following formats, DAX VALUE func... | [
{
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"text": "Converts a text string that represents a number to a number in numeric data type."
},
{
"code": null,
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"s": 2083,
"text": "VALUE (<text>) \n"
},
{
"code": null,
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"text": "text"
},
... |
JOGL Graphical Shapes | This tutorial describes drawing a straight line and various shapes using straight line. OpenGL API has provided primitive methods for drawing basic graphical elements such as point, vertex, line etc. Using these methods, you can develop shapes such as triangle, polygon and circle. In both, 2D and 3D dimensions.
To acce... | [
{
"code": null,
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"text": "This tutorial describes drawing a straight line and various shapes using straight line. OpenGL API has provided primitive methods for drawing basic graphical elements such as point, vertex, line etc. Using these methods, you can develop shapes such as t... |
Creating a simple statistical learning model from scratch: emphasizing prediction in regression | by Alex daSilva | Towards Data Science | Learning about statistical/machine learning can be intimidating, especially if you’re like me and coming from another field (eg., social sciences, life sciences, business, etc). There are hundreds of complex models to choose from and numerous schemes to validate your data. Here, we’re going to take a closer look at a s... | [
{
"code": null,
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"text": "Learning about statistical/machine learning can be intimidating, especially if you’re like me and coming from another field (eg., social sciences, life sciences, business, etc). There are hundreds of complex models to choose from and numerous schemes to v... |
C# | Get the number of elements in the SortedSet - GeeksforGeeks | 01 Feb, 2019
SortedSet class represents the collection of objects in sorted order. This class comes under the System.Collections.Generic namespace. SortedSet<T>.Count Property is used to get the number of elements in the SortedSet.
Properties:
In C#, SortedSet class can be used to store, remove or view elements.
It mai... | [
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"code": null,
"e": 24521,
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"text": "SortedSet class represents the collection of objects in sorted order. This class comes under the System.Collections.Generic namespace. SortedSet<T>.Count Property ... |
Python math library | exp() method - GeeksforGeeks | 06 Jan, 2019
Python has math library and has many functions regarding it. One such function is exp(). This method is used to calculate the power of e i.e. e^y or we can say exponential of y. The value of e is approximately equal to 2.71828.....
Syntax : math.exp(y)
Parameters :y [Required] – It is any valid python numb... | [
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"text": "Python has math library and has many functions regarding it. One such function is exp(). This method is used to calculate the power of e i.e. e^y or we can say exp... |
How to Build a Simple Machine Learning Web App in Python | by Chanin Nantasenamat | Towards Data Science | In this article, I will show you how to build a simple machine learning powered data science web app in Python using the streamlit library in less than 50 lines of code.
(Quick Note: You might also want to check out Part 1 of this streamlit tutorial series on building your first web app. Shoutout to Simon for suggestin... | [
{
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"text": "In this article, I will show you how to build a simple machine learning powered data science web app in Python using the streamlit library in less than 50 lines of code."
},
{
"code": null,
"e": 518,
"s": 342,
"text": "(Quick Note: You... |
Count NaN or missing values in Pandas DataFrame - GeeksforGeeks | 02 Jul, 2020
In this article, we will see how to Count NaN or missing values in Pandas DataFrame using isnull() and sum() method of the DataFrame.
Pandas isnull() function detect missing values in the given object. It return a boolean same-sized object indicating if the values are NA. Missing values gets mapped to True... | [
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"text": "\n02 Jul, 2020"
},
{
"code": null,
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"text": "In this article, we will see how to Count NaN or missing values in Pandas DataFrame using isnull() and sum() method of the DataFrame."
},
{
"code": null,
... |
XML - CDATA Sections | In this chapter, we will discuss XML CDATA section. The term CDATA means, Character Data. CDATA is defined as blocks of text that are not parsed by the parser, but are otherwise recognized as markup.
The predefined entities such as <, >, and & require typing and are generally difficult to read in the markup. ... | [
{
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"text": "In this chapter, we will discuss XML CDATA section. The term CDATA means, Character Data. CDATA is defined as blocks of text that are not parsed by the parser, but are otherwise recognized as markup."
},
{
"code": null,
"e": 2479,
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Check if Table, View, Trigger, etc present in Oracle - GeeksforGeeks | 10 Jan, 2018
Sometimes while working in SQL we often forget the names of the view or sequence or index or synonyms or trigger we earlier created. Also it may happen that we want to verify them in future.
Verifying means that we are checking for all the present database object or Trigger in that particular schema.This c... | [
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"text": "Sometimes while working in SQL we often forget the names of the view or sequence or index or synonyms or trigger we earlier created. Also it may happen that we wan... |
How to remove duplicate elements of an array in java? | To detect the duplicate values in an array you need to compare each element of the array to all the remaining elements in case of a match you got your duplicate element.
One solution to do so you need to use two loops (nested) where the inner loop starts with i+1 (where i is the variable of the outer loop) to avoid rep... | [
{
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"text": "To detect the duplicate values in an array you need to compare each element of the array to all the remaining elements in case of a match you got your duplicate element."
},
{
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"text": "One solution... |
Python Number hypot() Method | Python number method hypot() return the Euclidean norm, sqrt(x*x + y*y).
Following is the syntax for hypot() method −
hypot(x, y)
Note − This function is not accessible directly, so we need to import math module and then we need to call this function using math static object.
x − This must be a numeric value.
x − Thi... | [
{
"code": null,
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"text": "Python number method hypot() return the Euclidean norm, sqrt(x*x + y*y)."
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{
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"text": "Following is the syntax for hypot() method −"
},
{
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"... |
How to Create an Empty Figure with Matplotlib in Python? - GeeksforGeeks | 11 Dec, 2020
Creating a figure explicitly is an object-oriented style of interfacing with matplotlib. The figure is a basic building block of creating a plot as Matplotlib graphs our data on figures. This figure keeps track of all other components such as child axes, legends, title, axis, etc.
Steps to create an empty ... | [
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"text": "Creating a figure explicitly is an object-oriented style of interfacing with matplotlib. The figure is a basic building block of creating a plot as Matplotlib grap... |
show.bs.tab event in Bootstrap | The show.bs.event fires when the tab is about to be displayed.
Display the tab using the nav-tabs class −
<ul class="nav nav-tabs">
<li class="active"><a href="#home">Home</a></li>
<li><a href="#two">Java</a></li>
<li><a href="#three">CSS</a></li>
<li><a href="#four">Bootstrap</a></li>
<li><a href="#five">jQu... | [
{
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"text": "The show.bs.event fires when the tab is about to be displayed."
},
{
"code": null,
"e": 1168,
"s": 1125,
"text": "Display the tab using the nav-tabs class −"
},
{
"code": null,
"e": 1401,
"s": 1168,
"text": "<ul c... |
MVVM â Dependency Injection | In this chapter, we will briefly discuss about dependency injection. We have already covered data binding decouples Views and ViewModels from each other that allows them to communicate without knowing explicitly what is going on at the other end of the communication.
Now we need something similar to decouple our ViewMo... | [
{
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"text": "In this chapter, we will briefly discuss about dependency injection. We have already covered data binding decouples Views and ViewModels from each other that allows them to communicate without knowing explicitly what is going on at the other end of the ... |
Generate Captcha Using Python - GeeksforGeeks | 08 Oct, 2021
In this article, we are going to see how to generate a captcha using Python package captcha to generate our own CAPTCHA (Completely Automated Public Turing Test to Tell Computers and Humans Apart) in picture form. CAPTCHA is a form of challenge-response authentication security mechanism. CAPTCHA prevents a... | [
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},
{
"code": null,
"e": 24670,
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"text": "In this article, we are going to see how to generate a captcha using Python package captcha to generate our own CAPTCHA (Completely Automated Public Turing Test to... |
Convert Hex to RGBa for background opacity using SASS - GeeksforGeeks | 19 Aug, 2020
Sass rgba function uses Red-green-blue-alpha model to describe colours where alpha is used to add opacity to the color. It’s value ranges between 0.0 (completely transparent) to 1.0 (completely opaque). The function takes two input values- the hex color code and alpha and converts Hex code to RGBa format.
... | [
{
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"text": "\n19 Aug, 2020"
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"text": "Sass rgba function uses Red-green-blue-alpha model to describe colours where alpha is used to add opacity to the color. It’s value ranges between 0.0 (completely t... |
Lua - Object Oriented | Object Oriented Programming (OOP), is one the most used programming technique that is used in the modern era of programming. There are a number of programming languages that support OOP which include,
C++
Java
Objective-C
Smalltalk
C#
Ruby
Class − A class is an extensible template for creating objects, providing initia... | [
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},
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"code": null,
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AWK - Ternary Operator | We can easily implement a condition expression using ternary operator. The following example demonstrates this −
condition expression ? statement1 : statement2
When the condition expression returns true, statement1 gets executed; otherwise statement2 is executed. For instance, the following example finds the largest n... | [
{
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"text": "We can easily implement a condition expression using ternary operator. The following example demonstrates this −"
},
{
"code": null,
"e": 2018,
"s": 1970,
"text": "condition expression ? statement1 : statement2\n"
},
{
"code"... |
Construct a Turing Machine for language L = {wwr | w ∈ {0, 1}} - GeeksforGeeks | 08 May, 2018
Prerequisite – Turing MachineThe language L = {wwr | w ∈ {0, 1}} represents a kind of language where you use only 2 character, i.e., 0 and 1. The first part of language can be any string of 0 and 1. The second part is the reverse of the first part. Combining both these parts out string will be formed. Any ... | [
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"text": "\n08 May, 2018"
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"code": null,
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"text": "Prerequisite – Turing MachineThe language L = {wwr | w ∈ {0, 1}} represents a kind of language where you use only 2 character, i.e., 0 and 1. The first part of lan... |
Types of Software Testing | 24 Jun, 2022
Testing is the process of executing a program to find errors. To make our software perform well it should be error-free. If testing is done successfully it will remove all the errors from the software.
(i) All the tests should meet the customer requirements.(ii) To make our software testing should be perf... | [
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"code": null,
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"text": "Testing is the process of executing a program to find errors. To make our software perform well it should be error-free. If testing is done successfully it will remove all th... |
Java Program to Print the Elements of an Array | 12 Nov, 2020
An array is to be created in java and elements will be stored in it. After successful insertion, all the elements of the array are printed present in the array.
Arrays are used to store multiple values in a single variable, instead of declaring separate variables for each value. Users can access the elemen... | [
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"text": "An array is to be created in java and elements will be stored in it. After successful insertion, all the elements of the array are printed present in the array."
},
{
... |
for loop – Django Template Tags | 11 Jan, 2022
A Django template is a text document or a Python string marked-up using the Django template language. Django being a powerful Batteries included framework provides convenience to rendering data in a template. Django templates not only allow passing data from view to template, but also provides some limited... | [
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"text": "A Django template is a text document or a Python string marked-up using the Django template language. Django being a powerful Batteries included framework provides convenienc... |
Check for possible path in 2D matrix | 22 Feb, 2022
Given a 2D array(m x n). The task is to check if there is any path from top left to bottom right. In the matrix, -1 is considered as blockage (can’t go through this cell) and 0 is considered path cell (can go through it).
Note: Top left cell always contains 0
Examples:
Input : arr[][] = {{ 0, 0, 0, -1, 0}... | [
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"text": "Given a 2D array(m x n). The task is to check if there is any path from top left to bottom right. In the matrix, -1 is considered as blockage (can’t go through this cell) and... |
Java Program to Extract Digits from A Given Integer | 24 Feb, 2022
Problem Statement: For any random number taken into consideration the goal is to access every digit of the number.
Illustration: Simply taking two numbers be it, 12345 and 110102 absolutely random pick over which computation takes place as illustrated:
Input: 12345
Output: 1 // 1 digit
2 // Digit... | [
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Node.js crypto.pbkdf2Sync() Method | 23 May, 2022
The crypto.pbkdf2Sync() method gives a synchronous Password-Based Key Derivation Function 2 i.e, (PBKDF2) implementation. Moreover, a particular HMAC digest algorithm which is defined by digest is implemented to derive a key of the required byte length (keylen) from the stated password, salt, and iteration... | [
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"text": "The crypto.pbkdf2Sync() method gives a synchronous Password-Based Key Derivation Function 2 i.e, (PBKDF2) implementation. Moreover, a particular HMAC digest algorithm which is... |
Create login in SQL Server | 18 Aug, 2020
A login is an user account that you can use to access the SQL server. Logins are attached to users by the security identifier (SID).
Permissions to create login :Users with membership in the security-admin or sysadmin fixed server role can create logins on the server.
Creating a login with a password :Synt... | [
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"text": "A login is an user account that you can use to access the SQL server. Logins are attached to users by the security identifier (SID)."
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NLP | Proper Noun Extraction | 26 Feb, 2019
Chunking all proper nouns (tagged with NNP) is a very simple way to perform named entity extraction. A simple grammar that combines all proper nouns into a NAME chunk can be created using the RegexpParser class.
Then, we can test this on the first tagged sentence of treebank_chunk to compare the results wi... | [
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"text": "Chunking all proper nouns (tagged with NNP) is a very simple way to perform named entity extraction. A simple grammar that combines all proper nouns into a NAME chunk can be c... |
Time Formatting in Golang | 17 May, 2020
Golang supports time formatting and parsing via pattern-based layouts. To format time, we use the Format() method which formats a time.Time object.
Syntax:
func (t Time) Format(layout string) string
We can either provide custom format or predefined date and timestamp format constants are also available whi... | [
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"text": "Golang supports time formatting and parsing via pattern-based layouts. To format time, we use the Format() method which formats a time.Time object."
},
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"code": null... |
Regular Expression in grep | 30 Jan, 2019
Prerequisite: grep
Basic Regular Expression
Regular Expression provides an ability to match a “string of text” in a very flexible and concise manner. A “string of text” can be further defined as a single character, word, sentence or particular pattern of characters.
Like the shell’s wild–cards which match ... | [
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"text": "Basic Regular Expression"
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Python | SMS Bomber using Selenium | 26 May, 2021
Here, we are going to learn a simple SMS bomber trick (for fun and educational purpose). Selenium is a free tool for automated testing across different browsers. In this tutorial, we will learn to send automatically number of spam SMS for given number of frequency and interval.Requirement: You need to inst... | [
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"text": "Here, we are going to learn a simple SMS bomber trick (for fun and educational purpose). Selenium is a free tool for automated testing across different browsers. In this tuto... |
Get Financial Data from Yahoo Finance with Python | 16 Jun, 2021
In this article, we will see how to get financial data from Yahoo Finance using Python. We can retrieve company financial information (e.g. financial ratios), as well as historical market data by using this.
Installation:
Let us install them via pip commands
pip install yfinance
Once it is installed, we c... | [
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"text": "In this article, we will see how to get financial data from Yahoo Finance using Python. We can retrieve company financial information (e.g. financial ratios), as well as histo... |
PyQt5 – Changing background color of Push Button when mouse hover over it | 22 Apr, 2020
In this article we will see how to set background color to a push button when mouse hover. It gets back to its default color when cursor is not on the push button.
In order to do this we have to change the style sheet and had to add background color of push button when mouse hover over it. Below is the sty... | [
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CSS Introduction
| 07 Jun, 2022
Cascading Style Sheets, fondly referred to as CSS, is a simply designed language intended to simplify the process of making web pages presentable. CSS allows you to apply styles to web pages. More importantly, CSS enables you to do this independent of the HTML that makes up each web page. It describes how... | [
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"text": "Cascading Style Sheets, fondly referred to as CSS, is a simply designed language intended to simplify the process of making web pages presentable. CSS allows you to apply ... |
Output of C Programs | Set 5 | 17 May, 2021
Predict the output of below programs Question 1
c
int main(){ while(1){ if(printf("%d",printf("%d"))) break; else continue; } return 0;}
Output: Can’t be predictedExplanation: The condition in while loop is 1 so at first shot it looks infinite loop. Then there... | [
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Slicing, Indexing, Manipulating and Cleaning Pandas Dataframe | 05 Sep, 2020
With the help of Pandas, we can perform many functions on data set like Slicing, Indexing, Manipulating, and Cleaning Data frame.
Case 1: Slicing Pandas Data frame using DataFrame.iloc[]
Example 1: Slicing Rows
Python3
# importing pandas libraryimport pandas as pd # Initializing the nested list with Dat... | [
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How to Setup Handlebars View Engine in Node.js ? | 27 Apr, 2020
Handlebars is a template engine that is widely used and easy to use. The pages contain .hbs extension and there are many other template engines in the market like EJS, Mustache, etc.
Installation of hbs module:
You can visit the link Install hbs module. You can install this package by using this command.np... | [
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Setup Terraform On Linux and Windows Machine | 30 Jun, 2020
Before learning about Multicloud, we must know what is a cloud?. Cloud is a name given to groups of different kinds of services provided by the server and is available over the internet. Example: Compute Units, Storage Units (like google drive).Different companies have built their own data centers to provi... | [
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"text": "Before learning about Multicloud, we must know what is a cloud?. Cloud is a name given to groups of different kinds of services provided by the server and is available over th... |
How to use ngIf without an extra element in Angular2? | 29 Jul, 2020
In order to use *ngIf without an extra element in Angular 2+, we can use either <ng-container> or <ng-template>But in many cases, <ng-container> is recommended.The best scenario regarding the usage of with *ngIf without an extra element is mentioned below.
app.component.ts:
import { Component } from '@angu... | [
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memcpy() in C/C++ | 06 Sep, 2021
memcpy() is used to copy a block of memory from a location to another. It is declared in string.h
// Copies "numBytes" bytes from address "from" to address "to"
void * memcpy(void *to, const void *from, size_t numBytes);
Below is a sample C program to show working of memcpy().
C
/* A C program to demonstra... | [
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C | Data Types | Question 7 | 12 Dec, 2018
Assume that the size of char is 1 byte and negatives are stored in 2’s complement form
#include<stdio.h>int main(){ char c = 125; c = c+10; printf("%d", c); return 0;}
(A) 135(B) +INF(C) -121(D) -8Answer: (C)Explanation: 125 is represented as 01111101 in binary and when we add 10 i.e 1010 in bi... | [
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"code": "#include<stdio.h>int main(){ char c = 125; c = c+10; pr... |
UUID and Timeuuid functions in Cassandra | 19 May, 2021
Prerequisite – Cassandra In this article, we are going to discuss uuid() function which is very important to insert value and to uniquely generates “guaranteed unique” UID value Universally.
One of the reason of using uuid() function to generate Unique ID which helps in avoiding collisions. The uuid() fun... | [
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HTML <input type="hidden"> - GeeksforGeeks | 29 May, 2019
The HTML <input type=”hidden”> is used to define a input Hidden field. A hidden field also includes those data that could not be seen or modified by the users when submitted the form. A hidden field only stores those database records that need to be updated when submitting the form.
Syntax:
<input type="hi... | [
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"code": null,
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"text": "The HTML <input type=”hidden”> is used to define a input Hidden field. A hidden field also includes those data that could not be seen or modified by the users when... |
How to display Y-axis with Euro sign using ggplot2 in R? | When we have a Euro currency column in an R data frame as a response variable then we might to display the Euro sign in the plot created by using ggplot2 package. For this purpose, we can use scales package and the scale for Y axis will be changed by using the command scale_y_continuous(labels=dollar_format(suffix="€",... | [
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"text": "When we have a Euro currency column in an R data frame as a response variable then we might to display the Euro sign in the plot created by using ggplot2 package. For this purpose, we can use scales package and the scale for Y axis will be changed by us... |
SQL Tryit Editor v1.6 | SELECT * FROM Products
WHERE Price BETWEEN 10 AND 20;
Edit the SQL Statement, and click "Run SQL" to see the result.
This SQL-Statement is not supported in the WebSQL Database.
The example still works, because it uses a modified version of SQL.
Your browser does not support WebSQL.
Your are now using a light-version ... | [
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How to convert a class to another class type in C++? | In this tutorial, we will be discussing a program to understand how to convert a class to another class type in C/C++.
Class conversion can be done with the help of operator overloading. This allows data of one class type to be assigned to the object of another class type.
Live Demo
#include <bits/stdc++.h>
using name... | [
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How to create a DataBlock for Multispectral Satellite Image Segmentation with the Fastai-v2 | by Maurício Cordeiro | Towards Data Science | For information about the course Introduction to Python for Scientists (available on YouTube) and other articles like this, please visit my website cordmaur.carrd.co.
Fastai is an open source deep learning library that adds higher level functionalities to PyTorch and makes it easier to achieve state-of-the-art results ... | [
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Static NAT (on ASA) - GeeksforGeeks | 25 Oct, 2021
Prerequisite – Adaptive security appliance (ASA), Network address translation (NAT)ASA is a Cisco security device which has classic firewall capabilities like static packet filtering, stateful packet filtering with VPN, antivirus and intrusion prevention capabilities.Network Address Translation (NAT) is a ... | [
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"text": "Prerequisite – Adaptive security appliance (ASA), Network address translation (NAT)ASA is a Cisco security device which has classic firewall capabilities like stat... |
Check whether frequency of characters in a string makes Fibonacci Sequence - GeeksforGeeks | 26 Nov, 2021
Given a string with lowercase English alphabets. The task is to check whether the frequency of the characters in the string can be arranged as a Fibonacci series. If yes, print “YES”, otherwise print “NO”.Note:
Frequencies can be arranged in any way to form Fibonacci Series.
The Fibonacci Series starts f... | [
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"code": null,
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"text": "Given a string with lowercase English alphabets. The task is to check whether the frequency of the characters in the string can be arranged as a Fibonacci series. ... |
C# | Get an enumerator that iterates through the List - GeeksforGeeks | 01 Feb, 2019
List<T>.GetEnumerator Method is used to returns an enumerator that iterates through the List<T>.
Syntax:
public System.Collections.Generic.List<T>.Enumerator GetEnumerator ();
Return Value: It returns an List<T>Enumerator for the List<T>.
Below programs illustrate the use of List<T>.GetEnumerator Method:
E... | [
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Java Concurrency - AtomicIntegerArray Class | A java.util.concurrent.atomic.AtomicIntegerArray class provides operations on underlying int array that can be read and written atomically, and also contains advanced atomic operations. AtomicIntegerArray supports atomic operations on underlying int array variable. It have get and set methods that work like reads and w... | [
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"text": "A java.util.concurrent.atomic.AtomicIntegerArray class provides operations on underlying int array that can be read and written atomically, and also contains advanced atomic operations. AtomicIntegerArray supports atomic operations on underlying int arr... |
C# | Type.GetEnumValues() Method - GeeksforGeeks | 27 Aug, 2021
Type.GetEnumValues() Method is used to return an array of the values of the constants in the current enumeration type.Syntax:
public virtual Array GetEnumValues ();
Return Value: This method returns an array which contains the values. The elements of the array are sorted by the binary values i.e. the unsi... | [
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Tryit Editor v3.7 | CSS Grid Item
Tryit: Using grid-area to name grid items | [
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"text": "CSS Grid Item"
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Human Resource analytics — Can we predict Employee Turnover with caret in R? | by Hannah Roos | Towards Data Science | People are the key factors for success to every organization — nothing else produces such a big value like skilled minds in the right time and place. This is why organizations all over the world make tremendous efforts to find and — maybe even more importantly — to maintain valuable talents. In a world of data, HR mana... | [
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"text": "People are the key factors for success to every organization — nothing else produces such a big value like skilled minds in the right time and place. This is why organizations all over the world make tremendous efforts to find and — maybe even more import... |
Dart Programming - Collection | Dart, unlike other programming languages, doesn’t support arrays. Dart collections can be used to replicate data structures like an array. The dart:core library and other classes enable Collection support in Dart scripts.
Dart collections can be basically classified as −
A List is simply an ordered group of objects. T... | [
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Tryit Editor v3.7 | Tryit: HTML paragraphs ignore spaces | [] |
Tryit Editor v3.6 - Show Python | c = camelcase.CamelCase()
txt = "lorem ipsum dolor sit amet"
print(c.hump(txt))
#This method capitalizes the first letter of each word. | [
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Linked List Program in C | A linked list is a sequence of data structures, which are connected together via links. Linked List is a sequence of links which contains items. Each link contains a connection to another link. Linked list is the second most-used data structure after array.
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#in... | [
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Maximum triplet sum in array - GeeksforGeeks | 05 Nov, 2021
Given an array, the task is to find the maximum triplet sum in the array.Examples :
Input : arr[] = {1, 2, 3, 0, -1, 8, 10}
Output : 21
10 + 8 + 3 = 21
Input : arr[] = {9, 8, 20, 3, 4, -1, 0}
Output : 37
20 + 9 + 8 = 37
Naive approach: In this method, we simply run three-loop and one by one add three... | [
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"text": "Inpu... |
Beautiful Soup - Souping the Page | In the previous code example, we parse the document through beautiful constructor using a string method. Another way is to pass the document through open filehandle.
from bs4 import BeautifulSoup
with open("example.html") as fp:
soup = BeautifulSoup(fp)
soup = BeautifulSoup("<html>data</html>")
First the document is... | [
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What happens if try to access an element with an index greater than the size of the array in Java? | An array is a data structure/container/object that stores a fixed-size sequential collection of elements of the same type. The size/length of the array is determined at the time of creation.
The position of the elements in the array is called as index or subscript. The first element of the array is stored at the index ... | [
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LISP - If Construct | The if macro is followed by a test clause that evaluates to t or nil. If the test clause is evaluated to the t, then the action following the test clause is executed. If it is nil, then the next clause is evaluated.
Syntax for if −
(if (test-clause) (action1) (action2))
Create a new source code file named main.lisp an... | [
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"text": "The if macro is followed by a test clause that evaluates to t or nil. If the test clause is evaluated to the t, then the action following the test clause is executed. If it is nil, then the next clause is evaluated."
},
{
"code": null,
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PHP File Handling | File handling is an important part of any web application. You
often need to open and process a file for different tasks.
PHP has several functions for creating, reading, uploading, and editing files.
Be careful when manipulating files!
You can do a
lot of damage if you do something wrong. Common errors are: editin... | [
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JavaScript String - substring() Method | This method returns a subset of a String object.
The syntax to use substr() is as follows −
string.substring(indexA, [indexB])
indexA − An integer between 0 and one less than the length of the string.
indexA − An integer between 0 and one less than the length of the string.
indexB − (optional) An integer between 0 and... | [
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"text": "The syntax to use substr() is as follows −"
},
{
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"text": "string.substring(in... |
How to sort an ArrayList in Ascending Order in Java | To sort an ArrayList in ascending order, the easiest way is to the Collections.sort() method. With this method, you just need to set the ArrayList as the parameter as shown below −
Collections.sort(ArrayList)
Let us now see an example to sort an ArrayList un ascending order. Here, we are sorting ArrayList with integer ... | [
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"text": "To sort an ArrayList in ascending order, the easiest way is to the Collections.sort() method. With this method, you just need to set the ArrayList as the parameter as shown below −"
},
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Exception propagation in Java | Exception propagation in Java occurs when an exception thrown from the top of the stack. When it is not caught, the exception drops down the call stack of the preceding method. If it is not caught there, it further drops down to the previous method. This continues until the method reaches the bottom of the call stack o... | [
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"text": "Exception propagation in Java occurs when an exception thrown from the top of the stack. When it is not caught, the exception drops down the call stack of the preceding method. If it is not caught there, it further drops down to the previous method. Thi... |
C Program to insert an array element using pointers. | Write a C program to insert the elements into an array at runtime by the user and the result to be displayed on the screen after insertion. If the inserted element is greater than the size of an array, then, we need to display Invalid Input.
An array is used to hold the group of common elements under one name.
The arra... | [
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{
... |
XPath - Attribute Node | This attribute can be easily retrieved and checked by using the @attribute-name of the element.
@name − get the value of attribute "name".
<td><xsl:value-of select = "@rollno"/></td>
Attribute can be used to compared using operators.
@rollno = 493 − get the text value of attribute "rollno" and compare with a value.
<xs... | [
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{
"code": null,
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"s": 1825,
"text": "@name − get the value of attribute \"name\"."
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Classification of Signature and Text images using CNN and Deploying the model on Google Cloud ML Engine | by Krishna Parekh | Towards Data Science | As we know for any document of legal importance, may it be a contract, a consignment or a simple form, signature is a substantial part. Signature provides an identification as well as a confirmation. Currently, the model that identifies signature from printed text data is not available. So the work here presented is ab... | [
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Create and display a one-dimensional array-like object using Pandas in Python - GeeksforGeeks | 18 Aug, 2020
Series() is a function present in the Pandas library that creates a one-dimensional array and can hold any type of objects or data in it. In this article, let us learn the syntax, create and display one-dimensional array-like object containing an array of data using Pandas library.
Syntax : pandas.Series(p... | [
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Pandas Sidetable: A Smarter Way of Using Pandas | by Soner Yıldırım | Towards Data Science | Pandas is a very powerful and versatile Python data analysis library that expedites the preprocessing steps of data science projects. It provides numerous functions and methods that are quite useful in data analysis.
Although the built-in functions of Pandas are capable of performing efficient data analysis, custom mad... | [
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},
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QlikView - Rank Function | The Rank() function in QlikView is used to display the rank of the values in a field as well as return rows with specific rank value. So it is used in two scenarios. First scenario is in QlikView charts to display the ranks of the values in the field and second is in Aggregate function to display only the rows, which h... | [
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25 Questions to Ask as You Clean Data | by Rose Day | Towards Data Science | I work as a software engineer and data scientist with my code both in notebooks and software packages. If you haven’t heard it yet, you should stop and think before you code, and the same concept applies to data cleaning. It has been valuable to step back from the initial work and begin to think about the problem at ha... | [
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Modeling, Visualizing, and Navigating a Transportation Network with Memgraph | by Barbara Prkacin | Towards Data Science | If riding a bike or walking is not an option, using public transport is the most eco-friendly way to travel around a city. Navigating a public transportation system can be confusing and complicated.
As a passenger, you usually want to know how to get from one station to another and where to change lines to make your jo... | [
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"e": 371,
"s": 172,
"text": "If riding a bike or walking is not an option, using public transport is the most eco-friendly way to travel around a city. Navigating a public transportation system can be confusing and complicated."
},
{
"code": null,
"e": 841,
"s": 371,
... |
Prophet-able Forecasting. Getting started with Prophet... | by Werlindo Mangrobang | Towards Data Science | If you google “time-series forecasting”, most of the first search results you’ll get will involve autoregressive integrated moving average modeling (ARIMA) or exponential smoothing (ETS). And with good reason! There are popular options available for performing applying these time-series forecasting methods, both in R a... | [
{
"code": null,
"e": 663,
"s": 172,
"text": "If you google “time-series forecasting”, most of the first search results you’ll get will involve autoregressive integrated moving average modeling (ARIMA) or exponential smoothing (ETS). And with good reason! There are popular options available for perfo... |
Hands-on guide to Python Optimal Transport toolbox: Part 1 | by Aurelie Boisbunon | Towards Data Science | As a follow-up of the introductory article on optimal transport by Ievgen Redko, I will present below how you can solve Optimal Transport (OT) in practice using the Python Optimal Transport (POT) toolbox.
To start with, let us install POT using pip from the terminal by simply running
pip3 install pot
Or with conda
cond... | [
{
"code": null,
"e": 377,
"s": 172,
"text": "As a follow-up of the introductory article on optimal transport by Ievgen Redko, I will present below how you can solve Optimal Transport (OT) in practice using the Python Optimal Transport (POT) toolbox."
},
{
"code": null,
"e": 457,
"s":... |
The Most Awesome Loss Function. Paper Review: General and Adaptive... | by Saptashwa Bhattacharyya | Towards Data Science | Recently, I came across the amazing paper presented in CVPR 2019 by Jon Barron about developing a robust and adaptive loss function for Machine Learning problems. This post is a review of that paper along with some necessary concepts and, it will also contain an implementation of the loss function on a simple regressio... | [
{
"code": null,
"e": 503,
"s": 172,
"text": "Recently, I came across the amazing paper presented in CVPR 2019 by Jon Barron about developing a robust and adaptive loss function for Machine Learning problems. This post is a review of that paper along with some necessary concepts and, it will also con... |
Power BI Connects to Azure Databricks | Towards Data Science | Microsoft PowerBI is becoming more and more popular recently as a Data Analytics tool. Also, It is ubiquitous for a company to have a whole bucket of Microsoft products that include Azure.
Azure Databricks is one of the most popular services in the Azure platform. It leverages Apache Spark to process data in a distribu... | [
{
"code": null,
"e": 360,
"s": 171,
"text": "Microsoft PowerBI is becoming more and more popular recently as a Data Analytics tool. Also, It is ubiquitous for a company to have a whole bucket of Microsoft products that include Azure."
},
{
"code": null,
"e": 790,
"s": 360,
"text"... |
How to create transparent Status Bar and Navigation Bar in iOS? | You might have come across many application where the screen extends to complete screen i.e transparent Status Bar and transparent navigation bar.
Here we will be seeing how to create an application where the you’ll be having transparent status and navigation bar.
So let’s get started
Step 1 − Open Xcode → New Project ... | [
{
"code": null,
"e": 1209,
"s": 1062,
"text": "You might have come across many application where the screen extends to complete screen i.e transparent Status Bar and transparent navigation bar."
},
{
"code": null,
"e": 1327,
"s": 1209,
"text": "Here we will be seeing how to creat... |
Perl | keys() Function - GeeksforGeeks | 25 Jun, 2019
keys() function in Perl returns all the keys of the HASH as a list. Order of elements in the List need not to be same always, but, it matches to the order returned by values and each function.
Syntax: keys(HASH)
Parameter:HASH: Hash whose keys are to be printed
Return: For scalar context, it returns the nu... | [
{
"code": null,
"e": 23679,
"s": 23651,
"text": "\n25 Jun, 2019"
},
{
"code": null,
"e": 23872,
"s": 23679,
"text": "keys() function in Perl returns all the keys of the HASH as a list. Order of elements in the List need not to be same always, but, it matches to the order returned... |
How to center canvas in HTML5? | To center canvas in HTML 5, include the canvas tag in div tag. Then we can center align the div tag. By doing so, the canvas is also center aligned.
<!DOCTYPE html>.
<html>
<body>
<div style = "text-align:center;">
<canvas style = "background-color:GREEN;">This is my canvas</canvas>
</div>
</... | [
{
"code": null,
"e": 1211,
"s": 1062,
"text": "To center canvas in HTML 5, include the canvas tag in div tag. Then we can center align the div tag. By doing so, the canvas is also center aligned."
},
{
"code": null,
"e": 1396,
"s": 1211,
"text": "<!DOCTYPE html>.\n<html>\n <bod... |
Sum of maximum of all subarrays by adding even frequent maximum twice - GeeksforGeeks | 07 Feb, 2022
Given an array arr[] consisting of N integers (All array elements are a perfect power of 2), the task is to calculate the sum of the maximum elements in all the subarrays.
Note: If the frequency of the maximum element in a subarray is even, add twice the value of that element to the sum.
Examples:
Input:... | [
{
"code": null,
"e": 24785,
"s": 24754,
"text": " \n07 Feb, 2022\n"
},
{
"code": null,
"e": 24958,
"s": 24785,
"text": "Given an array arr[] consisting of N integers (All array elements are a perfect power of 2), the task is to calculate the sum of the maximum elements in all the... |
Reverse a Doubly linked list using recursion - GeeksforGeeks | 25 Oct, 2021
Given a doubly linked list. Reverse it using recursion.
Original Doubly linked list
Reversed Doubly linked list
We have discussed Iterative solution to reverse a Doubly Linked ListAlgorithm 1) If list is empty, return 2) Reverse head by swapping head->prev and head->next 3) If prev = NULL it mea... | [
{
"code": null,
"e": 24569,
"s": 24541,
"text": "\n25 Oct, 2021"
},
{
"code": null,
"e": 24626,
"s": 24569,
"text": "Given a doubly linked list. Reverse it using recursion. "
},
{
"code": null,
"e": 24655,
"s": 24626,
"text": "Original Doubly linked list "
}... |
Understanding Explicit vs Implicit measures in Power BI | by Nikola Ilic | Towards Data Science | One of the most challenging concepts for new Power BI users is to understand the difference between Measures and Calculated Columns. Or, to be more specific, the concept itself is not a big issue, but the most daunting thing for Power BI rookies is to understand when to use which.
Since I’ve already written about the u... | [
{
"code": null,
"e": 454,
"s": 172,
"text": "One of the most challenging concepts for new Power BI users is to understand the difference between Measures and Calculated Columns. Or, to be more specific, the concept itself is not a big issue, but the most daunting thing for Power BI rookies is to und... |
PDFBox - Adding Pages | In the previous chapter, we have seen how to create a PDF document. After creating a PDF document, you need to add pages to it. Let us now understand how to add pages in a PDF document.
You can create an empty page by instantiating the PDPage class and add it to the PDF document using the addPage() method of the PDDocu... | [
{
"code": null,
"e": 2213,
"s": 2027,
"text": "In the previous chapter, we have seen how to create a PDF document. After creating a PDF document, you need to add pages to it. Let us now understand how to add pages in a PDF document."
},
{
"code": null,
"e": 2359,
"s": 2213,
"text... |
C++ String Library - begin | It returns an iterator pointing to the first character of the string.
Following is the declaration for std::string::begin.
iterator begin();
const_iterator begin() const;
iterator begin() noexcept;
const_iterator begin() const noexcept;
none
It returns an iterator to the beginning of the string.
Never throw any e... | [
{
"code": null,
"e": 2673,
"s": 2603,
"text": "It returns an iterator pointing to the first character of the string."
},
{
"code": null,
"e": 2726,
"s": 2673,
"text": "Following is the declaration for std::string::begin."
},
{
"code": null,
"e": 2777,
"s": 2726,
... |
CSS overflow: auto | The CSS overflow: auto, adds a scrollbar only when it's needed, unlike overflow:scroll. You can try to run the following code to implement CSS overflow: auto property:
Live Demo
<!DOCTYPE html>
<html>
<head>
<style>
div {
background-color: orange;
width: 250px;
heig... | [
{
"code": null,
"e": 1230,
"s": 1062,
"text": "The CSS overflow: auto, adds a scrollbar only when it's needed, unlike overflow:scroll. You can try to run the following code to implement CSS overflow: auto property:"
},
{
"code": null,
"e": 1240,
"s": 1230,
"text": "Live Demo"
}... |
Don’t Panic If You Ever Make the Wrong Git Commit. I’ve Got You Covered | by Taylor Zhancher | Towards Data Science | 5 months ago when I first started contributing to open source, something made me nervous all the time.
Every single commit message on the branch had to follow a format, or your pull request doesn’t get merged.
Specifically, it should be: “PREFIX: Summary of what this commit is about”.
What happens if you have worked on... | [
{
"code": null,
"e": 274,
"s": 171,
"text": "5 months ago when I first started contributing to open source, something made me nervous all the time."
},
{
"code": null,
"e": 381,
"s": 274,
"text": "Every single commit message on the branch had to follow a format, or your pull requ... |
Tryit Editor v3.7 | Tryit: HTML RGB color values | [] |
Check horizontal and vertical symmetry in binary matrix | 13 Jun, 2022
Given a 2D binary matrix of N rows and M columns. The task is to check whether the matrix is horizontal symmetric, vertical symmetric, or both. The matrix is said to be horizontal symmetric if the first row is the same as the last row, the second row is the same as the second last row, and so on. And the m... | [
{
"code": null,
"e": 52,
"s": 24,
"text": "\n13 Jun, 2022"
},
{
"code": null,
"e": 712,
"s": 52,
"text": "Given a 2D binary matrix of N rows and M columns. The task is to check whether the matrix is horizontal symmetric, vertical symmetric, or both. The matrix is said to be horiz... |
unsigned char in C with Examples | 06 Aug, 2020
char is the most basic data type in C. It stores a single character and requires a single byte of memory in almost all compilers.
Now character datatype can be divided into 2 types:
signed charunsigned char
signed char
unsigned char
unsigned char is a character datatype where the variable consumes all the ... | [
{
"code": null,
"e": 52,
"s": 24,
"text": "\n06 Aug, 2020"
},
{
"code": null,
"e": 182,
"s": 52,
"text": "char is the most basic data type in C. It stores a single character and requires a single byte of memory in almost all compilers."
},
{
"code": null,
"e": 234,
... |
read command in Linux with Examples | 24 May, 2019
read command in Linux system is used to read from a file descriptor. Basically, this command read up the total number of bytes from the specified file descriptor into the buffer. If the number or count is zero then this command may detect the errors. But on success, it returns the number of bytes read. Zer... | [
{
"code": null,
"e": 53,
"s": 25,
"text": "\n24 May, 2019"
},
{
"code": null,
"e": 434,
"s": 53,
"text": "read command in Linux system is used to read from a file descriptor. Basically, this command read up the total number of bytes from the specified file descriptor into the buf... |
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