Tutorial by Examples: e

In this example, a plot with curves having common y-axis but different x-axis is demonstrated using twiny() method. Also, some additional features such as the title, legend, labels, grids, axis ticks and colours are added to the plot. # Plotting tutorials in Python # Adding Multiple plots by twin ...
Promises handle errors differently to synchronous or callback-driven code. const p = new Promise(function (resolve, reject) { reject(new Error('Oops')); }); // anything that is `reject`ed inside a promise will be available through catch // while a promise is rejected, `.then` will not be ...
Numeric literals of more than a few digits are hard to read. Pronounce 7237498123. Compare 237498123 with 237499123 for equality. Decide whether 237499123 or 20249472 is larger. C++14 define Simple Quotation Mark ' as a digit separator, in numbers and user-defined literals. This can make it ...
Fibonacci Numbers are a prime subject for dynamic programming as the traditional recursive approach makes a lot of repeated calculations. In these examples I will be using the base case of f(0) = f(1) = 1. Here is an example recursive tree for fibonacci(4), note the repeated computations: Non-Dy...
Java StringWriter class is a character stream that collects output from string buffer, which can be used to construct a string. The StringWriter class extends the Writer class. In StringWriter class, system resources like network sockets and files are not used, therefore closing the StringWriter i...
There are many ways to use MaterializeCSS framework. Few things to keep in mind before going to installation It is not a CSS only framwork, though it has CSS name in it. We can use its SCSS too It is not built for Angular It is a component framework too built on jquery. Though we are not supp...
It was most frequent question that can a same thread can be run twice. The answer for this is know one thread can run only once . if you try to run the same thread twice it will execute for the first time but will give error for second time and the error will be IllegalThreadStateException . exam...
docker-composer.yml web: ... env_file: - ./filename filename variable=value
A simple HTTP Request for the resource /index.html. The host www.example.com is specified in the HTTP Host header. GET /index.html HTTP/1.1 Host: www.example.com
A possible response to the request above. The response contains the HTTP headers Date, Content-Type, Content-Encoding and Content-Length. HTTP/1.1 200 OK Date: Wed, 21 Jun 2017 10:58:03 GMT Content-Type: text/html; charset=UTF-8 Content-Encoding: UTF-8 Content-Length: 150 <response body&g...
Open your command line Installation using Ruby gem update --system gem install compass Create a Project compass create <myproject> This will initialize a compass project. It will add a folder called . The folder will look like have the following structure: File/Folderdescription...
package com.streams; import java.io.*; public class DataStreamDemo { public static void main(String[] args) throws IOException { InputStream input = new FileInputStream("D:\\datastreamdemo.txt"); DataInputStream inst = new DataInputStream(input); int count...
Locate and open your TIBCO BW bwengine.tra file typlically under TIBCO_HOME/bw/5.12/bin/bwengine.tra (Linux environment) Look for the line that states: *** Common variables. Modify these only. *** Add the following line right after that section tibco.deployment=%tibco.deployment% ...
A simple OGL 4.0 GLSL shader program with vertex position and color attribute. The program is executed with a phyton script. To run the script, PyOpenGL must be installed. A shader program consists at least of a vertex shader and a fragmant shader (exception of computer shaders). The 1st shader s...
A minimal setup for camera output preview (Swift 2, Swift 3) import UIKit import AVFoundation class ViewController: UIViewController { var session: AVCaptureSession? var cameraPreviewLayer: AVCaptureVideoPreviewLayer? override func viewDidLoad() { super.viewDidLoad() ...
Valgrind provides you with the lines at which the error occurred at the end of each line in the format (file.c:line_no). Errors in valgrind are summarised in the following way: ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0) The most common errors include: Illegal read/write er...
One can use the following methods in order to import a Mercurial Repo into Git: Using fast export: cd git clone git://repo.or.cz/fast-export.git git init git_repo cd git_repo ~/fast-export/hg-fast-export.sh -r /path/to/old/mercurial_repo git checkout HEAD Using Hg-Git: A very deta...
We can use typedef to simplify the usage of function pointers. Imagine we have some functions, all having the same signature, that use their argument to print out something in different ways: #include<stdio.h> void print_to_n(int n) { for (int i = 1; i <= n; ++i) printf(...
Sometimes we need to join multiple tables to get aggregate data in return. here is how we can achieve the same using CodeIgniter Query Builder / Active Records. public function getStudentInfo($studentid){ $query = $this->db->select("st.id, st.name, st.class, mk.maths, mk.science&quo...

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