Tutorial by Examples: er

The <see> tag can be used to link to another class. It contains the cref member which should contain the name of the class that is to be referenced. Visual Studio will provide Intellsense when writing this tag and such references will be processed when renaming the referenced class, too. /// ...

The System.IO.StreamWriter class: Implements a TextWriter for writing characters to a stream in a particular encoding. Using the WriteLine method, you can write content line-by-line to a file. Notice the use of the using keyword which makes sure the StreamWriter object is disposed as soon as ...

The System.String class supports a number of methods to convert between uppercase and lowercase characters in a string. System.String.ToLowerInvariant is used to return a String object converted to lowercase. System.String.ToUpperInvariant is used to return a String object converted to upper...

import UIKit import WebKit class ViewController: UIViewController, UISearchBarDelegate, WKNavigationDelegate, WKUIDelegate { var searchbar: UISearchBar! //All web-browsers have a search-bar. var webView: WKWebView! //The WKWebView we'll use. var toolbar: UIToolbar! //Toolb...

To ensure that our collection can be iterated using iterator or for-each loop, we have to take care of following steps: The stuff we want to iterate upon has to be Iterable and expose iterator(). Design a java.util.Iterator by overriding hasNext(), next() and remove(). I have added a simple ...

Here's how to match a prefix code (a + or (00), then a number from 1 to 1939, with an optional space): This doesn't look for a valid prefix but something that might be a prefix. See the full list of prefixes (?:00|\+)?[0-9]{4} Then, as the entire phone number length is, at most, 15, we can look...

Sometimes we need preserve whole model and transfer it across actions or even controllers. Storing model at session good solution for this type of requirements. If we combine this with powerful model binding features of MVC we get elegant way of doing so. We can create generic session based model bi...

Read the accelerometer Sensor with precision. This example allocates memory: void Update() { //Get Precise Accelerometer values Vector3 accelValue = preciseAccelValue(); Debug.Log("PRECISE X: " + accelValue.x + " Y: " + accelValue.y + " Z: " + acc...

If you have only just popped it and the terminal is still open, you will still have the hash value printed by git stash pop on screen: $ git stash pop [...] Dropped refs/stash@{0} (2ca03e22256be97f9e40f08e6d6773c7d41dbfd1) (Note that git stash drop also produces the same line.) Otherwise, you...

In many cases, for instance when using web views in table view cells, it's important to determine the content size of the rendered HTML page. After loading the page, this can be calculated in the UIWebViewDelegate delegate method: - (void) webViewDidFinishLoad:(UIWebView *) aWebView { CGRect f...

Sometimes you may want maintain versions of a git repository on machines that have no network connection. Bundles allow you to package git objects and references in a repository on one machine and import those into a repository on another. git tag 2016_07_24 git bundle create changes_between_tags...

$sce ("Strict Contextual Escaping") is a built-in angular service that automatically sanitize content and internal sources in templates. injecting external sources and raw HTML into the template requires manual wrapping of$sce. In this example we'll create a simple $sce sanitation f...

string s1 = "string1"; string s2 = "string2"; string s3 = s1 + s2; // "string1string2"

Concatenating strings using a StringBuilder can offer performance advantages over simple string concatenation using +. This is due to the way memory is allocated. Strings are reallocated with each concatenation, StringBuilders allocate memory in blocks only reallocating when the current block is e...

The $http service is a function which generates an HTTP request and returns a promise. General Usage // Simple GET request example: $http({ method: 'GET', url: '/someUrl' }).then(function successCallback(response) { // this callback will be called asynchronously // when the respo...

HTTP requests are widely used repeatedly across every web app, so it is wise to write a method for each common request, and then use it in multiple places throughout the app. Create a httpRequestsService.js httpRequestsService.js appName.service('httpRequestsService', function($q, $http){ ...

A value of a struct type can be written using a struct literal that specifies values for its fields. type Point struct { X, Y int } p := Point{1, 2} The above example specifies every field in the right order. Which is not useful, because programmers have to remember the exact fields in order. M...

The "listener" or "observer" pattern is the most common strategy for creating asynchronous callbacks in Android development. public class MyCustomObject { //1 - Define the interface public interface MyCustomObjectListener { public void onAction(String ac...

If you want to keep on-premises copy of the Gradle and let the Wrapper use it in the builds, you can set the distributionUrl pointing to your copy on the wrapper task: task wrapper(type: Wrapper) { gradleVersion = '2.0' distributionUrl = "http\://server/dadada/gradle-${gradleVersion}...

Lambdas are meant to provide inline implementation code for single method interfaces and the ability to pass them around as we have been doing with normal variables. We call them Functional Interface. For example, writing a Runnable in anonymous class and starting a Thread looks like: //Old way n...