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Whenever a Python script is invoked from the command line, the user may supply additional command line arguments which will be passed on to the script. These arguments will be available to the programmer from the system variable sys.argv ("argv" is a traditional name used in most programmi...

If you are able to download an update of Android Studio, but after it restarts nothing happens, check out the following example: After the patch was downloaded and Android Studio closed, open the terminal Go to your android studio folder, e.g. cd ~/android-studio Go to bin subfolder: cd bin ...

To use Leaflet, load its stylesheet and JavaScript file to your page: <link rel="stylesheet" href="/css/leaflet.css" /> <script src="/js/leaflet.js"></script> These resources can be downloaded from a variety of locations such as Leaflet's homepage...

It is usually not a good idea to mix signed and unsigned integers in arithmetic operations. For example, what will be output of following example? #include <stdio.h> int main(void) { unsigned int a = 1000; signed int b = -1; if (a > b) puts("a is more than b&quot...

public bool IsTypeNullable<T>() { return Nullable.GetUnderlyingType( typeof(T) )!=null; }

The simplest way to concatenate list1 and list2: merged = list1 + list2 zip returns a list of tuples, where the i-th tuple contains the i-th element from each of the argument sequences or iterables: alist = ['a1', 'a2', 'a3'] blist = ['b1', 'b2', 'b3'] for a, b in zip(alist, blist):...

The following example shows how you can use Json.Net to serialize the data in an C# Object's instance, to JSON string. using System; using System.Collections.Generic; using Newtonsoft.Json; public class Employee { public string FirstName { get; set; } public string LastName { get; s...

If you want to import a module that doesn't already exist as a built-in module in the Python Standard Library nor as a side-package, you can do this by adding the path to the directory where your module is found to sys.path. This may be useful where multiple python environments exist on a host. im...

Let's suppose we have a reference to the JQuery type definition and we want to extend it to have additional functions from a plugin we included and which doesn't have an official type definition. We can easily extend it by declaring functions added by plugin in a separate interface declaration with ...

Installation npm install -D webpack typescript ts-loader webpack.config.js module.exports = { entry: { app: ['./src/'], }, output: { path: __dirname, filename: './dist/[name].js', }, resolve: { extensions: ['', '.js', '.ts'], }, module: { loaders: [...

You can use engine.begin to open a connection and begin a transaction that will be rolled back if an exception is raised, or committed otherwise. This is an implicit way of using a transaction, since you don't have the option of rolling back manually. with engine.begin() as conn: conn.execute(...

To retrieve a list of all servers registered on the instance: EXEC sp_helpserver;

Define: module.config(['$urlMatcherFactoryProvider', function($urlMatcherFactory) { $urlMatcherFactory.type('boolean', { decode: function(val) { return val == true || val == "true" }, encode: function(val) { return val ? 1 : 0; }, equals: function(a, b) { return this.is(...

A java.util.Date object does not have a concept of time zone. There is no way to set a timezone for a Date There is no way to change the timezone of a Date object A Date object created with the new Date() default constructor will be initialised with the current time in the system default timezo...

Smoothing, also known as blurring, is one of the most commonly used operation in Image Processing. The most common use of the smoothing operation is to reduce noise in the image for further processing. There are many algorithms to perform smoothing operation. We'll look at one of the most commonl...

A hexadecimal number is a value in base-16. There are 16 digits, 0-9 and the letters A-F (case does not matter). A-F represent 10-16. An octal number is a value in base-8, and uses the digits 0-7. A binary number is a value in base-2, and uses the digits 0 and 1. All of these numbers result in ...

Python has only limited support for parsing ISO 8601 timestamps. For strptime you need to know exactly what format it is in. As a complication the stringification of a datetime is an ISO 8601 timestamp, with space as a separator and 6 digit fraction: str(datetime.datetime(2016, 7, 22, 9, 25, 59, 55...

This example adds a list of places with image and name by using an ArrayList of custom Place objects as dataset. Activity layout The layout of the activity / fragment or where the RecyclerView is used only has to contain the RecyclerView. There is no ScrollView or a specific layout needed. <?x...

import flash.net.URLRequest; import flash.media.Sound; import flash.events.Event; var req:URLRequest = new URLRequest("click.mp3"); var snd:Sound = new Sound(req); snd.addEventListener(Event.COMPLETE, function(e: Event) { snd.play(); }

package { import flash.events.EventDispatcher; public class AbstractDispatcher extends EventDispatcher { public function AbstractDispatcher(target:IEventDispatcher = null) { super(target); } } } To dispatch an event on an instance: var dispatcher:AbstractDispatcher =...