Tutorial by Examples: n

I create a file called database-servlet.xml somewhere on the classpath. Initially your config file will look like this: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/...

One of the great things about Linq is that it is so easy to extend. You just need to create an extension method whose argument is IEnumerable<T>. public namespace MyNamespace { public static class LinqExtensions { public static IEnumerable<List<T>> Batch<T&...

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....

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...

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...

The flow or execution of a loop can be controlled by use of break and continue expressions. Break break exits the current loop. In case the loop is nested inside another loop, the parent loop is unaffected. for (i in 0...10) { for (j in 0...10) { if (j == 5) break; trace(i,...

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...

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...

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...

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...

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...

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...

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...

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

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...

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...

<style> input:in-range { border: 1px solid blue; } </style> <input type="number" min="10" max="20" value="15"> <p>The border for this value will be blue</p> The :in-range CSS pseudo-class matches when an element...

Let's say we want to change main loop, only for specific taxonomy, or post type. Targeting only main loop on book post type archive page. add_action( 'pre_get_posts', 'my_callback_function' ); function my_callback_function( $query ) { if( !$query->is_main_query() || is_admin() ) return;...

add_action( 'pre_get_posts', 'single_category' ); function single_category( $query ) { if( !$query->is_main_query() || is_admin() ) return; $query->set( 'cat', '1' ); return; }

All we need to do is to use set() method of $query object. It takes two arguments, first what we want to set and second what value to set. add_action( 'pre_get_posts', 'change_posts_per_page' ); function change_posts_per_page( $query ) { if( !$query->is_main_query() || is_admin() ) retu...