Tutorial by Examples: d

Vaadin plug-in for eclipse provides a quick way to build vaadin project with Apache Ivy dependency manager. Vaadin's documentation explains how to create vaadin project with the help of Eclipse plugin. To install the plug-in just go to eclipse marketplace and search vaadin. Current version of the p...

One big problem is that valuable named routes is not supported by Express out of the box. Solution is to install supported third-party package, for example express-reverse: npm install express-reverse Plug it in your project: var app = require('express')(); require('express-reverse')(app); ...

The standard (17.6.4.2.1/1) generally forbids extending the std namespace: The behavior of a C++ program is undefined if it adds declarations or definitions to namespace std or to a namespace within namespace std unless otherwise specified. The same goes for posix (17.6.4.2.2/1): The behavi...

To find if a string ends with a pattern, the end_with? method comes in handy str = "I like pineapples" str.end_with?("pineaaples") => false

An array is a data structure that stores values of same data type. In Python, this is the main difference between arrays and lists. While python lists can contain values corresponding to different data types, arrays in python can only contain values corresponding to same data type. In this tutorial...

Intent: Separate the construction of a complex object from its representation so that the same construction process can create different representations Builder pattern is useful when you have few mandatory attributes and many optional attributes to construct a object. To create an object with dif...

Template method pattern is a behavioral design pattern that defines the program skeleton of an algorithm in an operation, defering some steps to subclasses. Structure: Key notes: Template method uses Inheritance The Template method implemented by the base class should not be overridden. In t...

entry = tk.Entry(parent, width=10) entry.insert(0, "Hello, World!")

The value of an entry widget can be obtained with the get method of the widget: name_entry = tk.Entry(parent) ... name = name_entry.get() Optionally, you may associate an instance of a StringVar, and retrieve the value from the StringVar rather than from the widget: name_var = tk.StringVar() ...

Since Java lambdas are closures, they can "capture" the values of variables in the enclosing lexical scope. While not all lambdas capture anything -- simple lambdas like s -> s.length() capture nothing and are called stateless -- capturing lambdas require a temporary object to hold the...

Modules can be required without using relative paths by putting them in a special directory called node_modules. For example, to require a module called foo from a file index.js, you can use the following directory structure: index.js \- node_modules \- foo |- foo.js \- package.json ...

Objective-C UILabel *label = [[UILabel alloc] init]; label.highlighted = YES; label.highlightedTextColor = [UIColor redColor]; Swift let label = UILabel() label.highlighted = true label.highlightedTextColor = UIColor.redColor() Swift 3 let label = UILabel() label.isHighlighted = true ...

If you like to show the dialog without the close button (i.e. the x button in the upper-right corner of the dialog), perhaps because you want to force the user to select one of options or buttons in the dialog itself: 1- Give your dialog a CSS class: $("#selector").dialog({ closeOnE...

Download: To set up WebSphere Liberty, download the latest zip from WASdev.net. Layout: Once you have the zip, extract it to any location on your file system. The basic layout of a Liberty install is the following: wlp/ # WLP_INSTALL_DIR bin/ # location of scrip...

Usage: $ nodetool repair [-h | -p | -pw | -u] <flags> [ -- keyspace_name [table_name]] Default Repair Option $ nodetool repair This command will repair the current node's primary token range (i.e. range which it owns) along with the replicas of other token ranges it has in all tables a...

Add following Paths to the PATH-Enviromentvariable [Path to CMake]\bin [Path to Git]\bin [Path to SDK]\tools [Path to SDK]\platform-tools [Path to NDK] [Path to ANT]\bin [Path to MinGW]\bin [Path to MinGW]\msys\1.0\bin [Path to Java jre]\bin [Path to Java jdk]\bin Make sure you use ba...

You can find the Android Sample in [SFML_ROOT]\examples\android You can copy it to leave the SFML repository in it's original state. Open cmd.exe in the sample location. To get a list of all available Android build targets: android list target Run Update Project for the Sample: android upda...

Swift 2 import UIKit extension UIDevice { var modelName: String { var systemInfo = utsname() uname(&systemInfo) let machineMirror = Mirror(reflecting: systemInfo.machine) let identifier = machineMirror.children.reduce("") { identifier, ele...

You can disable compiler warnings using #pragma warning disable and restore them using #pragma warning restore: #pragma warning disable CS0168 // Will not generate the "unused variable" compiler warning since it was disabled var x = 5; #pragma warning restore CS0168 // Will gene...

We shall create a simple Alert Dialog in Xamarin.Android Now considering you have gone through the getting started guide from the documentation. You must be having the project structure like this: Your Main Activity must be looking like this: public class MainActivity : Activity { ...