Tutorial by Examples: el

Create web directory in same folder as the vendor directory. Create index.php file in web directory with contents <?php // web/index.php require_once __DIR__.'/../vendor/autoload.php'; $app = new Silex\Application(); $app->get("/", function () { return "Hello wo...

Components let you split the UI into independent, reusable pieces. This is the beauty of React; we can separate a page into many small reusable components. Prior to React v14 we could create a stateful React component using React.Component (in ES6), or React.createClass (in ES5), irrespective of wh...

This is a simple Simulink model where we can easily generate a signal and connect it to the scope. As this example shows anyone without knowledge of programming can easily work with the model, change its parameters and see the effect on the output.

To add additional restriction to the poReceiptLinesSelection data view, you should invoke Select method on base view and inspect each item in returned PXResultSet independently to decide if it complies with additional restriction(s): public class APInvoiceEntryExt : PXGraphExtension<APInvoiceEn...

import redis r = redis.StrictRedis(host='localhost', port=6379, db=0) r.lpush('myqueue','myelement')

Individual pixel access in OpenCV Mat structure can be achieved in multiple ways. To understand how to access, it is better to learn the data types first. Basic Structures explains the basic datatypes. Shortly, CV_<bit-depth>{U|S|F}C(<number_of_channels>) is the basic structure of a typ...

Cargo.toml: [package] name = "customderive" version = "0.1.1" [lib] proc-macro=true [dependencies] quote="^0.3.12" syn="^0.11.4" src/lib.rs: #![crate_type = "proc-macro"] extern crate proc_macro; use proc_macro::TokenStream; exte...

In OpenCV, images can be RGB/BGR, HSV, grayscaled, black-white and so on. It is crucial to know the data type before dealing with images. The image data types are mainly CV_8UC3 (Matrix of uchar with 3 channels) and CV_8U (Matrix of uchar with 1 channel), however, the conversion to other types such...

Activate Developer Mode: Login to odoo application. After login user may see several odoo menu's. Click on setting menu. Click on 'Activate the developer mode' which is located at right-bottom corner of settings page. Developer mode now activated.

Teacher Class: class Teacher { private String name; private double salary; private String subject; public Teacher (String tname) { name = tname; } public String getName() { return name; } private double getSal...

There are two main functions in Redis (HSET and HMSET) for adding fields to a hash key. Both functions are available in redis-py. Using HSET: import redis r = redis.StrictRedis(host='myserver', port=6379, db=0) r.hset('my_key', 'field0', 'value0') Using HMSET: import redis r = redis.St...

This example echoes the special character ! into a file. This would only work when DelayedExpansion is disabled. When delayed expansion in enabled, you will need to use three carets and an exclamation mark like this: @echo off setlocal enabledelayedexpansion echo ^^^!>file echo ^>>&...

Selection sort is noted for its simplicity. It starts with the first element in the array, saving it's value as a minimum value (or maximum, depending on sorting order). It then itterates through the array, and replaces the min value with any other value lesser then min it finds on the way. That min...

g + geom_bar(aes(x = cut, fill = color), position = "fill") + guides(fill = guide_legend(title = NULL))

Its key features include: Use of the publish/subscribe message pattern which provides one-to-many message distribution and decoupling of applications. A messaging transport that is agnostic to the content of the payload. Three qualities of service for message delivery A small transp...

Create a workspace mkdir -p ~/catkin_ws/src cd ~/catkin_ws/src catkin_init_workspace Build your workspace cd ~/catkin_ws/ catkin_make Source your setup file source devel/setup.bash Create a new package named hello_world with some basic dependencies catkin_create_pkg hello_world std_m...

Having type column in a Rails model without invoking STI can be achieved by assigning :_type_disabled to inheritance_column: class User < ActiveRecord::Base self.inheritance_column = :_type_disabled end

Transcript show: 'Hello World!'. This will print Hello World! to the Transcript window in Smalltalk. Transcript is the class that allows you to print to the Transcript window by sending the message show: to that object. The colon indicates that this message requires a parameter which is in this c...

import org.openqa.selenium.WebDriver; import org.openqa.selenium.firefox.FirefoxDriver; class test_webdriver{ public static void main(String[] args) { WebDriver driver = new FirefoxDriver(); driver.get("http://stackoverflow.com/"); driver.close(); } }...

Sometimes, you need to output to more than one index in ElasticSearch, or have a custom mapping you want to apply to new indices as they roll in. There are two ways to apply a custom mapping. One way, is to upload an ElasticSearch template. See the ElasticSearch documentation for that. The other ...