Tutorial by Examples: g

Usually we are not using second parameter in select([$select = '*'[, $escape = NULL]]) in CodeIgniter. If you set it to FALSE, CodeIgniter will not try to protect your field or table names. In the following example, we are going to select the datetime type field by formatting it using sql query an...

Warning message: typings WARN deprecated 10/25/2016: "registry:dt/jasmine#2.5.0+20161003201800" is deprecated (updated, replaced or removed) Update the reference with: npm run typings -- install dt~jasmine --save --global Replace [jazmine] for any library that is throwing warning

The syntactic sugar Most of the getting started examples of ExpressJs include this piece of code var express = require('express'); var app = express(); ... app.listen(1337); Well, app.listen is just a shortcut for: var express = require('express'); var app = express(); var http = require(...

LibGDX is a free, open-source game-development library developed in Java. It's goals are to allow users to develop cross-platform games that run on desktop, Android, iOS, and web browsers. Write code once, deploy it to any of the major platforms.

Installing Gulp and His Tasks $ npm install gulp --save-dev $ npm install gulp-sass --save-dev $ npm install gulp-uglify --save-dev $ npm install gulp-imagemin --save-dev Determining Folder Structure In this structure, we will use the app folder for development purposes, while the dist folde...

import pandas as pd df = pd.DataFrame([{'var1': 'a,b,c', 'var2': 1, 'var3': 'XX'}, {'var1': 'd,e,f,x,y', 'var2': 2, 'var3': 'ZZ'}]) print(df) reshaped = \ (df.set_index(df.columns.drop('var1',1).tolist()) .var1.str.split(',', expand=True) .stack() .reset_ind...

#ifndef MYCOMPAREFILEDIALOG_H #define MYCOMPAREFILEDIALOG_H #include <QtWidgets/QDialog> class MyCompareFileDialog : public QDialog { Q_OBJECT public: MyCompareFileDialog(QWidget *parent = 0); ~MyCompareFileDialog(); }; #endif // MYCOMPAREFILEDIALOG_H

#include "MyCompareFileDialog.h" #include <QLabel> MyCompareFileDialog::MyCompareFileDialog(QWidget *parent) : QDialog(parent) { setWindowTitle("Compare Files"); setWindowFlags(Qt::Dialog); setWindowModality(Qt::WindowModal); resize(300, 100); ...

Liferay exposes many default and custom services available to other systems via JSON. To explore services on a particular liferay instance, use a given URL - A local instance in this case: http://localhost:8080/api/jsonws/ Select the required service, consume the service with the given syntax ...

var JSONObject = { stringProp: 'stringProp', booleanProp: false, intProp: 8 } var JSONString = JSON.stringify(JSONObject); console.log(JSONString); /* output * {"stringProp":"stringProp","booleanProp":false,"intProp":8} */

var JSONObject = { stringProp: 'stringProp', booleanProp: false, intProp: 8 } var JSONString = JSON.stringify(JSONObject, ['intProp']); console.log(JSONString); /* output * {"intProp":8} */

var JSONObject = { stringProp: 'stringProp', booleanProp: false, intProp: 8 } var JSONString = JSON.stringify(JSONObject, null, 2); console.log(JSONString); /* output: * { * "stringProp": "stringProp", * "booleanProp": false, * "...

Loading from string Use simplexml_load_string to create a SimpleXMLElement from a string: $xmlString = "<?xml version='1.0' encoding='UTF-8'?>"; $xml = simplexml_load_string($xmlString) or die("Error: Cannot create object"); Note that or not || must be used here becau...

To add a background-image rule via the CSSOM, first get a reference to the rules of the first stylesheet: var stylesheet = document.styleSheets[0].cssRules; Then, get a reference to the end of the stylesheet: var end = stylesheet.length - 1; Finally, insert a background-image rule for the bo...

First of all, Ensure that the user which will be running this call has the Change backup settings and control backup process privilege. # # TC Backup Launcher # Script to launch a backup on the TeamCity Server # Param( [Parameter(Mandatory=$true)][string]$username, [Parameter(Mandato...

There are two type of supervision strategies that we follow to supervise any actor: One-For-One Strategy One-For-All Strategy case object ResumeException extends Exception case object StopException extends Exception case object RestartException extends Exception override v...

Lifecycle Monitoring in Akka is usually referred to as DeathWatch. Monitoring is thus used to tie one actor to another so that it may react to the other actor’s termination, in contrast to supervision which reacts to failure. Monitoring Monitoring is particularly useful if a supervisor ...

PHP lacks a build-in function to encrypt and decrypt large files. openssl_encrypt can be used to encrypt strings, but loading a huge file into memory is a bad idea. So we have to write a userland function doing that. This example uses the symmetric AES-128-CBC algorithm to encrypt smaller chunks of...

Suppose you have two views ViewA and ViewB Instance of ViewB is created inside ViewA, so ViewA can send message to ViewB's instance, but for the reverse to happen we need to implement delegation (so that using delegate ViewB's instance could send message to ViewA) Follow these steps to implement t...

The ClassLoader needs to provide a ProtectionDomain identifying the source of the code: public class PluginClassLoader extends ClassLoader { private final ClassProvider provider; private final ProtectionDomain pd; public PluginClassLoader(ClassProvider provider) { this...