Tutorial by Examples: v

Setup After setting up a simple project to use webpack, babel and react issuing $npm i -g webpack-dev-server will install the development http server for quicker development. Modifying webpack.config.js var path = require('path'); module.exports = { entry: './src/index.js', output: { ...

A cycle in a directed graph exists if there's a back edge discovered during a DFS. A back edge is an edge from a node to itself or one of the ancestors in a DFS tree. For a disconnected graph, we get a DFS forest, so you have to iterate through all vertices in the graph to find disjoint DFS trees. ...

Variance measures how far a set numbers is spread out from it's mean. From practical perspective it is squared distance from its mean (center) - the bigger the number the farther the point is. The following example would return variance of salary values SELECT name, salary, VARIANCE(salary) "...

STDDEV returns the sample standard deviation of expr, a set of numbers. You can use it as both an aggregate and analytic function. It differs from STDDEV_SAMP in that STDDEV returns zero when it has only 1 row of input data, whereas STDDEV_SAMP returns null. Oracle Database calculates the standard ...

Once you have node.js installed on your system, just follow the procedure below to get a basic web server running with support for both HTTP and HTTPS! Step 1 : Build a Certificate Authority create the folder where you want to store your key & certificate : mkdir conf go to tha...

Default behavior is to de-select row when clicked twice. In some use cases, you might want to disable this de-selecting behavior. Note table.deselectItem(item) method will imperatively deselect an item. This works with both item or index (when using items array) as an argument. Working jsBin &lt...

While the JavaScript tracking snippet described above ensures the script will be loaded and executed asynchronously on all browsers, it has the disadvantage of not allowing modern browsers to preload the script. The alternative async tracking snippet below adds support for preloading, which will pr...

A process with a sensitivity list cannot also contain wait statements. It is equivalent to the same process, without a sensitivity list and with one more last statement which is: wait on <sensitivity_list>; Example: process(clock, reset) begin if reset = '1' then q &l...

public static final int PLACE_AUTOCOMPLETE_FROM_PLACE_REQUEST_CODE=1; public static final int PLACE_AUTOCOMPLETE_TO_PLACE_REQUEST_CODE=2; fromPlaceEdit.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { ...

Enable validation using annotations in app/config/config.yml file framework: validation: { enable_annotations: true } Create an Entity in AppBundle/Entity directory. The validations are made with @Assert annotations. <?php # AppBundle/Entity/Car.php namespace AppBundle\Ent...

Create an Entity in AppBundle/Entity directory. You can do this manually, or by using Symfony's command php bin/console doctrine:generate:entity and filling in the required information in each step. You must specify yml option at Configuration format (yml, xml, php or annotation) step. <?php...

1 cd my/project/dir 2 git clone git://github.com/zendframework/ZendSkeletonApplication.git 3 cd ZendSkeletonApplication 4 php composer.phar self-update 5 php composer.phar install

We install OpenCV 3.1.0 on Windows and get started. There are two ways to install OpenCV on windows. One is to download the installer and run it. Other is to build from source. This is the easiest way to install OpenCV and get started. OpenCV gives pre-build binaries to install on Windows here. Aft...

<?php wp_enqueue_style('theme-five', get_template_directory_uri() . '/path/to/additional/css'); wp_style_add_data('theme-five', 'alt', true); wp_style_add_data('theme-five', 'title', __('theme-five.css', 'your-theme-name')); ?> wp_style_add_data

This example shows how to retrieve an ID of a newly created item using SharePoint REST API. Note : listName - This variable contains name of you list. newItemBody - This will be your request body for adding new item in list. e.g. var newItemBody = { __metadata: { 'type': 'SP.Data.MyListNameIte...

String jsonStr = "{\"name\" : \"Abcd\", \"greeting\": \"Hello\", }"; //Sample Json String Gson gson = new Gson(); // Creates new instance of Gson JsonElement element = gson.fromJson (jsonStr, JsonElement.class); //Converts the json string to Json...

Component import {Component, OnInit} from '@angular/core'; import { FormGroup, FormControl, FORM_DIRECTIVES, REACTIVE_FORM_DIRECTIVES, Validators, FormBuilder, FormArray } from "@angular/forms"; import {Control} from "@angular/common"; ...

This example applies to maven projects. Add the jetty-maven-plugin to build element as below. <build> <plugins> <plugin> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-maven-plugin</artifactId> <version&g...

You have to add a div with the class .row-height inside the row, and also add .col-height to the columns. If you want to restrict the effect to a certain media query, just use the responsive .row-height and .col-height classes: for example .row-sm-height with .col-sm-height. CSS version: .row-heig...

I find that the examples in the docker inspect documentation seem magic, but do not explain much. Docker inspect is important because it is the clean way to extract information from a running container docker inspect -f ... container_id (or all running container) docker inspect -f ... $(docker p...