Tutorial by Examples: e

Active Patterns as .NET API wrappers

Active Patterns can be used to make calling some .NET API's feel more natural, particularly those that use an output parameter to return more than just the function return value. For example, you'd normally call the System.Int32.TryParse method as follows: let couldParse, parsedInt = System.Int32....

F# • Active Patterns

Each loop

The @each directive allows you to iterate through any list or map. It takes the form of @each $var or <list or map> {} where $var can be any variable name and <list or map> can be anything that returns a list or map. In the following example, the loop will iterate through the $authors l...

sass • Loops and Conditons

Share information between different pages

One of the easiest examples of using shared services is when we want to store some data from a given page of our application, and then get that data again but from another page. One option could be to send that data as a parameter (for instance, if one page calls the other one) but if we want to us...

ionic2 • Using Services

Import data from RDBMS to HBase table

The following sqoop command will be used to import the data from RDBMS table into HBase table, if the table does not exists in HBase it will create a new table and import the data into this table sqoop import \ --query 'select emp_id, emp_name, emp_sal from employee where $CONDITIONS' \ ...

sqoop • Connecting Sqoop to other databases/datastores

Remove extra paddings to fit to a precisely measured text.

UITextView has extra paddings by default. Sometimes it's annoying especially if you want to measure some text without view instance and place them at some area precisely. Do this to remove such paddings. messageTextView.textContainerInset = UIEdgeInsetsZero messageTextView.textContainer.lineFragm...

iOS • UITextView

While

While-loops execute a body expression as long as the loop condition evaluates to true. A while-loop which logs numbers in range 9 to 0 (inclusive) can be written as follows: var i = 10; while (i-- > 0) { trace(i); } Try the example on try.haxe.org. References "While", Ha...

haxe • Loops

Do-while

Do-while-loops execute a body expression at least once, and then keep executing it as long as the loop condition evaluates to true. A do-while-loop which logs numbers in range 10 to 0 (inclusive) can be written as follows: var i = 10; do { trace(i); } while (i-- > 0); Try the example ...

haxe • Loops

Uploading a Conda Package

Before starting you must have: Anaconda installed on your system Account on Binstar If you are not using Anaconda 1.6+ install the binstar command line client: $ conda install binstar $ conda update binstar If you are not using Anaconda the Binstar is also available on pypi: $ pip install bin...

Python Language • Deployment

Setup for Specflow

Pre -Requsite: Download Visual Studio IDE Create a new project Install specflow visual studio integration, Nunit Adapter & Nunit framework Download specflow for visual studio as shown below

specflow • Getting started with specflow

Lambda - Listener Example

Anonymous class listener Before Java 8, it’s very common that an anonymous class is used to handle click event of a JButton, as shown in the following code. This example shows how to implement an anonymous listener within the scope of btn.addActionListener. JButton btn = new JButton("My Butto...

Java Language • Lambda Expressions

Line plots

Simple line plot import matplotlib.pyplot as plt # Data x = [14,23,23,25,34,43,55,56,63,64,65,67,76,82,85,87,87,95] y = [34,45,34,23,43,76,26,18,24,74,23,56,23,23,34,56,32,23] # Create the plot plt.plot(x, y, 'r-') # r- is a style code meaning red solid line # Show the plot plt.show...

matplotlib • Basic Plots

Hello Web (Basic "Hello World"-type setup)

<html> <head> <script src="https://code.jquery.com/jquery-3.1.0.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script> <script src="https:...

backbone.js • Getting started with backbone.js

Reading the response

response = requests.get("https://api.github.com/events") text_resp = response.text JSON response: for json-formatted responses the package provides a built-in decoder response = requests.get('https://api.github.com/events') json_resp = response.json() This method will raise a Valu...

python-requests • Getting started with python-requests

Reading status codes

The attribute status_code contains the status code of the response good_req = requests.get('https://api.github.com/events') code_200 = good_req.status_code notfound_req = requests.get('https://api.github.com/not_found') code_404 = notfound_req.status_code requests.codes.__dict__ will provid...

python-requests • Getting started with python-requests

Generating model from database

In Visual Studio go to your Solution Explorer then click on Project you will be adding model Right mouse. Choose ADO.NET Entity Data Model Then choose Generate from database and click Next in next window click New Connection... and point to the database you want to generate model from (Could be M...

Entity Framework • Database first model generation

Show month and year dropdown

jQuery datepicker has two options to allow displaying dropdowns for month and year selection. These options make navigation through large timeframes easier. <input type="text" id="datepicker"> <script> $("#datepicker").datepicker({ changeMont...

jQuery UI Library • Datepicker

Animate an Image

class AnimatedImage extends Component { constructor(props){ super(props) this.state = { logoMarginTop: new Animated.Value(200) } } componentDidMount(){ Animated.timing( this.state.logoMarginTop, { toValue: 100 ...

react-native • Animation API

Installation or Setup

We have 2 way, we can install Universal app in windows 10 devices (OS/Phone). One app works for both mobile and OS 1 Install using Power Shell command Step 1: Make sure app not have any error and developed, then right click on Universal app project in solution explorer. Step 2: Select Store and C...

win-universal-app • Getting started with win-universal-app

Deferring operations using $q.defer

We can use $q to defer operations to the future while having a pending promise object at the present, by using $q.defer we create a promise that will either resolve or reject in the future. This method is not equivalent of using the $q constructor, as we use $q.defer to promisify an existing routin...

AngularJS • Angular promises with $q service

CSS3 :in-range selector example

CSS • Selectors