Tutorial by Examples: w

How to call spark-submit

To call this code you should create the jar of your scala code. Than you have to call your spark submit like this: spark-submit --master yarn-client --jars ./my-scala-code.jar --driver-class-path ./my-scala-code.jar main.py This will allow you to call any kind of scala code that you need in your...

apache-spark • Calling scala jobs from pyspark

How to declare and use property in Ant.

Ant provides some built-in properties Property NameValuebasedirthe absolute path of the project's basedirant.filethe absolute path of the buildfile.ant.versionthe version of Antant.project.default-targetthe name of the currently executing project's default targetant.project.namename of the projecta...

ant • Ant Properties

How to work with JavaScript plugins

There are four ways to work with JavaScript plugins, Ember add-on Import JavaScript plugins globally Consume named AMD plugins Via ember-browserify

ember.js • Getting started with ember.js

Writing simple value into database

First, complete the installation and setup to connect your app to Firebase. Then from anywhere in your class, you can write: // Write a message to the database FirebaseDatabase database = FirebaseDatabase.getInstance(); DatabaseReference myRef = database.getReference("message"); myRe...

firebase-database • Getting started with firebase-database

build.gradle with multiple third party plugins

Gradle (All Versions) When adding multiple third party plugins you do not need to separate them into different instances of the buildscript(All) or plugin(2.1+) code, new plug ins can be added alongside pre-existing plugins. buildscript { repositories { maven { url "https://plu...

gradle • Using third party plugins

One or two parameters in callback—error handling in d3.request()

When using d3.request() or one of the convenience constructors (d3.json, d3.csv, d3.tsv, d3.html and d3.xml) there are many sources for error. There may be problems with the issued request or its response due to network errors, or the parsing might fail if the content is not well-formed. Within the...

d3.js • Using D3 with JSON and CSV

Replacing fragments with ajax

If you want to replace parts of your website, ajax is an easy way to do it. The website.html where you want to replace the content based on the selected value: <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"> ...

thymeleaf • Getting started with thymeleaf

Access to Request in a Twig or PHP template.

In Twig template, Request object is available at {{ app.request }} When you want display request method in Twig, try this: <p>Request method: {{ app.request.method }}</p> In PHP template <p>Request method: <?php echo $app->getRequest()->getMethod() ?></p>...

symfony2 • Request

Grouping a few input fields

While designing a form, you might like to group a few input fields into a group to help organise the form layout. This can be done by using the tag . Here is an example for using it. For each fieldset, you can set a legend for the set using the tag LEGEND TEXT Example <form> <fieldset...

HTML • Forms

Basic jumbotron with two lines of text and a button

This is a jumbotron with a title, a content and a button. Code <div class="jumbotron"> <h1>Title text</h1> <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec tortor ipsum, convallis sit.</p> <p><a class="btn btn-default&...

twitter-bootstrap • Jumbotron

Secure your WebApp with Login and Logout

This example is a very simple Spring Boot application. Maven Dependencies At first add the following dependencies to your project. Spring Initializr is recommended when you create a new project. <parent> <groupId>org.springframework.boot</groupId> <artifactId>spr...

thymeleaf • Spring Security and Thymeleaf

Show blog title

Code <h1><?php echo get_option( 'blogname' ); ?></h1> Output Name of the blog in H1 style

WordPress • get_option()

Show Character Set

Code <p><?php echo esc_html( sprintf( __( 'Character set: %s', 'textdomain' ), get_option( 'blog_charset' ) ) ); ?></p> Output Character set: UTF-8

WordPress • get_option()

Using tools like lscpu and lshw

By using tools like lscpu as lscpu is an easy way to get CPU information. $ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 1 Core(s) per socket: 4 So...

GNU/Linux • Getting System Information

Reshape from wide to long format with gather()

library(tidyr) ## example data df <- read.table(text =" numbers firstName secondName 1 1 1.5862639 0.4087477 2 2 0.1499581 0.9963923 3 3 0.4117353 0.3740009 4 4 -0.4926862 0.4437916", header = T) df # numbers firstName secondName # 1 ...

R Language • Reshape using tidyr

Creating a video with OpenCV (Java)

VideoWriter videoWriter; videoWriter = new VideoWriter(outputFile, VideoWriter.fourcc('x', '2','6','4'), fps, frameSize, isRGB); //We have stated that we will use x264 as codec with FourCC //For writing, we add the following method and it will write the image we give as parameter...

opencv • Creating a Video

Standard HTML Helpers with their HTML Outputs

Html.TextBox() @Html.TextBox("Name", null, new { @class = "form-control" }) output:<input class="form-control" id="Name"name="Name"type="text"value=""/> @Html.TextBox("Name", "Stack Overflow", new { ...

asp.net-mvc • Html Helpers

Configure restriction access when Docker daemon starts

Work in progress

Docker • Iptables with Docker

Hello World

Gradle tasks can be written using Groovy code from inside a projects build.gradle file. These tasks can then be executed using > gradle [taskname] at the terminal or by executing the task from within an IDE such as Eclipse. To create the Hello World example in gradle we must define a task that w...

gradle • Getting started with gradle

The typeid keyword

The typeid keyword is a unary operator that yields run-time type information about its operand if the operand's type is a polymorphic class type. It returns an lvalue of type const std::type_info. Top-level cv-qualification are ignored. struct Base { virtual ~Base() = default; }; struct Deri...

C++ • RTTI: Run-Time Type Information