Tutorial by Examples: co

Common Misconception about asyncio

probably the most common misconception about asnycio is that it lets you run any task in parallel - sidestepping the GIL (global interpreter lock) and therefore execute blocking jobs in parallel (on separate threads). it does not! asyncio (and libraries that are built to collaborate with asyncio) b...

Python Language • Asyncio Module

JPEG Streaming with Fresco using DraweeController

This example assumes that you have already added Fresco to your app (see this example): SimpleDraweeView img = new SimpleDraweeView(context); ImageRequest request = ImageRequestBuilder .newBuilderWithSource(Uri.parse("http://example.com/image.png")) .setProgressiveRende...

Android • Fresco

Create Command-line Launcher

A command-line launcher is a handle tool which allows one to open WebStorm using the command-line. It can easily be created by using the menus Tools > Create Command-line Launcher... After selecting the option, you will be presented with the "Create Launcher Script" prompt for a l...

webstorm • Getting started with webstorm

Setup Nancyfx with Dotnet core v1.1, Kestrel, and Visual Studio Code on *nix systems

Prerequiste steps: Get dotnet core for your platform: Dotnet Core Follow instructions and make sure dotnet core is working Get Visual Studio Code for your platform: VS Code Launch Visual Studio Code (VS code) and install the C# extension then reload Create self hosted NancyFx project: ...

nancy • Getting started with nancy

If statement conditions are standard boolean expressions and values

The following statement if (conditionA && conditionB && conditionC) //... is exactly equivalent to bool conditions = conditionA && conditionB && conditionC; if (conditions) // ... in other words, the conditions inside the "if" statement just form an...

C# Language • Conditional Statements

Comparison between BCMath and float arithmetic operations

bcadd vs float+float var_dump('10' + '-9.99'); // float(0.0099999999999998) var_dump(10 + -9.99); // float(0.0099999999999998) var_dump(10.00 + -9.99); // float(0.0099999999999998) var_dump(bcadd('10', '-9.99', 20)); // string(22) "0.01000000000000000000&q...

PHP • BC Math (Binary Calculator)

Understanding the Control Flow

Consider the following test: it('should test something', function() { browser.get('/dashboard/'); $("#myid").click(); expect(element(by.model('username')).getText()).toEqual('Test'); console.log("HERE"); }); In the following test, when the console.log() is ex...

protractor • Control Flow and Promises

How to configure the font size of views in Eclipse on Linux

Eclipse does not give you the possibility to change the font size of the views like 'Project Explorer' or 'Servers', which looks ugly on Linux since Eclipse uses the default (desktop) font size. But you can edit specific configuration files to get the proper font sizes. To fix this annoying font si...

eclipse • Configuring Eclipse

Producer / consumer example

pthread_mutex_t queueMutex; pthread_cond_t queueCond; Queue queue; void Initialize() { //Initialize the mutex and the condition variable pthread_mutex_init(&queueMutex, NULL); pthread_cond_init(&queueCond, NULL); } void Producer() { //First we get some new data ...

pthreads • Conditional Variables

`Could not deduce (Fractional Int) ...`

The error message in the title is a common beginner mistake. Let's see how it arises and how to fix it. Suppose we need to compute the average value of a list of numbers; the following declaration would seem to do it, but it wouldn't compile: averageOfList ll = sum ll / length ll The problem is...

Haskell Language • Arithmetic

Get the HTML content of CKEditor

Create a file ckeditor-content.html with the following content: <!DOCTYPE html> <html> <head> <title>CKEditor Get Content Demo!</title> </head> <body> <script src="//cdn.ckeditor.com/4.6.1/basic/ckeditor.js"></script> ...

ckeditor • Getting started with ckeditor

Combined form and query string

Flask also allows access to a CombinedMultiDict that gives access to both the request.form and request.args attributes under one variable. This example pulls data from a form field name submitted along with the echo field in the query string. Flask Example: from flask import Flask, request app...

Flask • Accessing request data

Debug in the console

Module Module1 Sub Main() Debug.WriteLine("This line will be shown in the Visual Studio output console") Console.WriteLine("Press a key to exit") Console.ReadKey() Debug.WriteLine("End of application") End Sub End Modul...

Visual Basic .NET Language • Debugging your application

Configure Test Application

Once you have your UWP application ready for tests you should add test application to your solution. To do it "right" click on the solution and choose "Unit Test App (Universal Windows)": Once you add it to the solution there are few more steps required to configure it. You w...

uwp • Unit Testing for UWP

Connect Test Application with target app code

Once your test application is ready you can connect it with code for which you want to write unit tests. Either you have you code in PCL, or in UWP app project (I assume that you applied MVVM pattern) just add reference to it in Test Application project: Now you have access to all your code from...

uwp • Unit Testing for UWP

Using plugin configuration

Plugins can be configured by annotating fields with @Parameter. The MOJO is then injected with the configuration. @Mojo(name = "greet") public final class GreetMojo extends AbstractMojo { @Parameter(required = true) public String name; public void execute() throws Mojo...

Apache Maven • Create a Maven Plugin

Increase security by hiding the location of your CodeIgniter files

Within the CodeIgniter, there are two main directories to worry about: system and application. The system folder contains the core guts of CodeIgniter. The application folder will contain all of the code specific to your application, including models, controllers, views and other relevant libraries...

codeigniter • Getting started with codeigniter

Parameter set to limit the combination of parmeters

Function Do-Something { Param ( [Parameter(Mandatory=$true)] [String]$SomeThingToDo, [Parameter(ParameterSetName="Silently", mandatory=$false)] [Switch]$Silently, [Parameter(ParameterSetName="Loudly", mandatory=$false)] ...

PowerShell • Parameter sets

Producer-Consumer pattern using the Ada Rendezvous mechanism

A synchronous producer-consumer solution ensures that the consumer reads every data item written by the producer exactly one time. Asynchronous solutions allow the consumer to sample the output of the producer. Either the consumer consumes the data faster than it is produced, or the consumer consume...

ada • Implementing the producer-consumer pattern

Producer-Consumer with a sampling consumer

This example uses the main procedure as the producer task. In Ada the main procedure always runs in a task separate from all other tasks in the program, see minimal example. ------------------------------------------------------------------ -- Sampling Consumer -- --------------------------------...

ada • Implementing the producer-consumer pattern