Tutorial by Examples: re

Creating symbolic link in a web server using SSH

In Laravel documentation, a symbolic link (symlink or soft link) from public/storage to storage/app/public should be created to make files accessible from the web. (THIS PROCEDURE WILL CREATE SYMBOLIC LINK WITHIN THE LARAVEL PROJECT DIRECTORY) Here are the steps on how you can create symbolic lin...

Laravel • Filesystem / Cloud Storage

Creating your own Pipeline

When creating a scrapy project with scrapy startproject myproject, you'll find a pipelines.py file already available for creating your own pipelines. It isn't mandatory to create your pipelines in this file, but it would be good practice. We'll be explaining how to create a pipeline using the pipeli...

scrapy • Item Pipeline

Creating Error object

new Error(message) Creates new error object, where the value message is being set to message property of the created object. Usually the message arguments are being passed to Error constructor as a string. However if the message argument is object not a string then Error constructor calls .toString...

Node.js • Node.js Error Management

Create $GO_PATH/gulpfile.js

var gulp = require('gulp'); var path = require('path'); var shell = require('gulp-shell'); var goPath = 'src/mypackage/**/*.go'; gulp.task('compilepkg', function() { return gulp.src(goPath, {read: false}) .pipe(shell(['go install <%= stripPath(file.path) %>'], { ...

Go • Getting Started With Go Using Atom

Create $GO_PATH/mypackage/source.go

package mypackage var PublicVar string = "Hello, dear reader!" //Calculates the factorial of given number recursively! func Factorial(x uint) uint { if x == 0 { return 1 } return x * Factorial(x-1) }

Go • Getting Started With Go Using Atom

Creating $GO_PATH/main.go

Now you can start writing your own go code with auto-completion using Atom and Gulp: package main import ( "fmt" "mypackage" ) func main() { println("4! = ", mypackage.Factorial(4)) }

Go • Getting Started With Go Using Atom

Rest Parameters

function argumentLength(...args) { return args.length; } argumentLength(5) // returns 1 argumentLength(5, 3) //returns 2 argumentLength(5, 3, 6) //returns 3 By prefacing the last argument of your function with ... all arguments passed to the function are read as an array. In this examp...

Node.js • Node.js v6 New Features and Improvement

Spread Operator

function myFunction(x, y, z) { } var args = [0, 1, 2]; myFunction(...args); The spread syntax allows an expression to be expanded in places where multiple arguments (for function calls) or multiple elements (for array literals) or multiple variables are expected. Just like the rest parameters s...

Node.js • Node.js v6 New Features and Improvement

How to configure the font size of views in Eclipse on Linux

Eclipse does not give you the possibility to change the font size of the views like 'Project Explorer' or 'Servers', which looks ugly on Linux since Eclipse uses the default (desktop) font size. But you can edit specific configuration files to get the proper font sizes. To fix this annoying font si...

eclipse • Configuring Eclipse

Getting started with Angular 2 with node.js/expressjs backend (http example included)

We will create a simple "Hello World!" app with Angular2 2.4.1 (@NgModule change) with a node.js (expressjs) backend. Prerequisites Node.js v4.x.x or higher npm v3.x.x or higher or yarn Then run npm install -g typescript or yarn global add typescriptto install typescript globally ...

Angular 2 • Getting started with Angular 2

Creating a future with oneshot function

There are some general Future trait implementations in the futures crate. One of them is implemented in futures::sync::oneshot module and is available through futures::oneshot function: extern crate futures; use std::thread; use futures::Future; fn expensive_computation() -> u32 { //...

Rust • Futures and Async IO

CKEditor - Inline Editor Example

Create a file ckeditor-inline.html with the following content: <!DOCTYPE html> <html> <head> <title>CKEditor Inline Demo!</title> </head> <body> <script src="//cdn.ckeditor.com/4.6.1/basic/ckeditor.js"></script> <...

ckeditor • Getting started with ckeditor

Defining separate behaviours in different platforms

Different platforms can have separate implementations of the same method. This example also illustrates how build tags and file suffixes can be used together. File main.go: package main import "fmt" func main() { fmt.Println("Hello World from Conditional Compilation Doc!&...

Go • Developing for Multiple Platforms with Conditional Compiling

Producer / consumer example

pthread_mutex_t queueMutex; pthread_cond_t queueCond; Queue queue; void Initialize() { //Initialize the mutex and the condition variable pthread_mutex_init(&queueMutex, NULL); pthread_cond_init(&queueCond, NULL); } void Producer() { //First we get some new data ...

pthreads • Conditional Variables

Dual-purpose modules (refinements or global patches)

It's a good practice to scope patches using Refinements, but sometimes it's nice to load it globally (for example in development, or testing). Say for example you want to start a console, require your library, and then have the patched methods available in the global scope. You couldn't do this wit...

Ruby Language • Refinements

Dynamic refinements

Refinements have special limitations. refine can only be used in a module scope, but can be programmed using send :refine. using is more limited. It can only be called in a class/module definition. Still, it can accept a variable pointing to a module, and can be invoked in a loop. An example show...

Ruby Language • Refinements

Passing function as an argument to another function, thus creating a Higher-Order Function

func multiply2(item: Int)-> Int { return (item + 2) } let multiply2ToMe = multiply2 // passing the function directly to the function as param print(math.performOperation(inputArray: arrayToBeProcessed, operation: multiply2ToMe)) Output: [3, 5, 7, 9, 11, 13, 10, 8, 6, 4, 102] ...

Swift Language • Function as first class citizens in Swift

Tutorial by Examples: re

Creating symbolic link in a web server using SSH

Creating your own Pipeline

Creating Error object

Create $GO_PATH/gulpfile.js

Create $GO_PATH/mypackage/source.go

Creating $GO_PATH/main.go

Rest Parameters

Spread Operator

How to configure the font size of views in Eclipse on Linux

Getting started with Angular 2 with node.js/expressjs backend (http example included)

Creating a future with oneshot function

CKEditor - Inline Editor Example

Defining separate behaviours in different platforms

Producer / consumer example

Dual-purpose modules (refinements or global patches)

Dynamic refinements

Passing function as an argument to another function, thus creating a Higher-Order Function

Function as return type from another function

Taking screenshots

Responsive image using the srcset attribute