Tutorial by Examples: w

//create a component that will be injected trait TimeUtil { lazy val timeUtil = new TimeUtilImpl() class TimeUtilImpl{ def now() = new DateTime() } } //main controller is depended on time util trait MainController { _ : TimeUtil => //inject time util into main...

var http = require('http'); var fs = require('fs'); var path = require('path'); http.createServer(function (request, response) { console.log('request ', request.url); var filePath = '.' + request.url; if (filePath == './') filePath = './index.html'; var extname = String(path.extnam...

Express passes a next callback to every route handler and middleware function that can be used to break logic for single routes across multiple handlers. Calling next() with no arguments tells express to continue to the next matching middleware or route handler. Calling next(err) with an error will ...

Sending email is pretty simple in Go. It helps to understand the RFC 822, which specifies the style an email need to be in, the code below sends a RFC 822 compliant email. package main import ( "fmt" "net/smtp" ) func main() { // user we are authorizing as ...

If you want to detect when your user enters a specific location, you can create a fence for the specific location with a radius you want and be notified when your user enters or leaves the location. // Your own action filter, like the ones used in the Manifest private static final String FENCE_REC...

If more than 12 columns are placed within a single row, each group of extra columns will, as one unit, wrap onto a new line. <div class="row"> <div class="col-xs-9">.col-xs-9</div> <div class="col-xs-4">.col-xs-4<br>Since 9 + 4 = 13 ...

Install DateTime on your PC and then use it in perl script: use DateTime; Create new current datetime $dt = DateTime->now( time_zone => 'Asia/Ho_Chi_Minh'); Then you can access elements's values of date and time: $year = $dt->year; $month = $dt->month; $day = $dt->day; $...

Set single element: $dt->set( year => 2016 ); Set many elements: $dt->set( year => 2016, 'month' => 8); Add duration to datetime $dt->add( hour => 1, month => 2) Datetime subtraction: my $dt1 = DateTime->new( year => 2016, month => 8, ...

Pig provides an engine for executing data flows in parallel on Hadoop. It includes a language, Pig Latin, for expressing these data flows. Pig Latin includes operators for many of the traditional data operations (join, sort, filter, etc.), as well as the ability for users to develop their own fun...

IronPython enables to use generic classes and methods from the .net framework. Generics can be used with the same syntax as accessing an index. For passing more than one type-parameter, they must be separated with a comma: l = Dictionary[int, str]() That way we create a dictionary where keys on...

url = 'http://httpbin.org/post' files = {'file': ('report.xls', open('report.xls', 'rb'), 'application/vnd.ms-excel', {'Expires': '0'})} r = requests.post(url, files=files)

Attribute Image capitalizes all characters of enumeration literals. The function Case_Rule_For_Names applies upper case for the first character and makes the rest lower case. with Ada.Text_IO; use Ada.Text_IO; with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants; with Ada.Strings.Fixed...

You can set the desired UI widget's stylesheet using any valid CSS. The example below will set a QLabel's text color a border around it. #include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::Mai...

Simply specifying a file destination, echo will create, write, or append to a file. <echo file=example.txt" append="false"> hello world </echo>

The whole ES6 spec is not yet implemented in its entirety so you will only be able to use some of the new features. You can see a list of the current supported ES6 features at http://node.green/ Since NodeJS v6 there has been pretty good support. So if you using NodeJS v6 or above you can enjoy usi...

The concept of timing is related more to the physics of flip flops than VHDL, but is an important concept that any designer using VHDL to create hardware should know. When designing digital hardware, we are typically creating synchronous logic. This means our data travels from flip-flop to flip-flo...

The JWT RFC stablish three classes of claims: Registered claims like sub, iss, exp or nbf Public claims with public names or names registered by IANA which contain values that should be unique like email, address or phone_number. See full list Private claims to use in your own context...

To get the raw value of a field on the Context Item: Sitecore.Context.Item["Field Name"]; To get the raw value of a field on a given item, item: item["Field Name"];

You have 2 ways to debug the popup window. Both ways are by using the Chrome DevTools. Option 1: Right click the extension's action button, and choose Inspect popup Option 2: Open the popup window, directly in your browser as a tab. For example, if you extension id is abcdefghijkmnop, and your ...

Writing and executing a simple TestNG program is mainly 3 step process. Code - write business logic of your test and annotate it with TestNG annotations Configure - add information of your test in testng.xml or in build.xml Run TestNG - it can be invoked from command line, ANT, IDE like Eclipse...