Tutorial by Examples: l

Before getting started, make sure you have the latest Azure PowerShell installed. Once installed, start an Azure PowerShell session from your machine. First, you'll need to log in and authenticate to Windows Azure. Add-AzureRmAccount You'll receive a dialog box asking for your Azure credentials...

roslaunch is an important tool that manages the start and stop of ROS nodes. It takes one or more "*.launch" files as arguments. For this example, I will refer to the following (as asked in this question), so how can we execute those commands consecutively & automatically : roscd ste...

Objective-C //Checking for 3-D Touch availability if ([self.traitCollection respondsToSelector:@selector(forceTouchCapability)] && (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable)) { [self registerForPreviewingWithDelegate:self sourceVie...

Each control has a property DataBindings which is a list of System.Windows.Forms.Binding objects. The Add()-method has some overloads which enables you easily binding to the property of an object: textBox.DataBindings.Add( "Text", dataObj, "MyProperty" ); Note, that binding b...

Passing ByRef or ByVal indicates whether the actual value of an argument is passed to the CalledProcedure by the CallingProcedure, or whether a reference (called a pointer in some other languages) is passed to the CalledProcedure. If an argument is passed ByRef, the memory address of the argument i...

let bodies = (contact.bodyA.categoryBitMask <= contact.bodyB.categoryBitMask) ? (A:contact.bodyA,B:contact.bodyB) : (A:contact.bodyB,B:contact.bodyA) switch (bodies.A.categoryBitMask,bodies.B.categoryBitMask) { case let (a, _) where (a && superPower): //All we care about is i...

Linear search is a simple algorithm. It loops through items until the query has been found, which makes it a linear algorithm - the complexity is O(n), where n is the number of items to go through. Why O(n)? In worst-case scenario, you have to go through all of the n items. It can be compared to l...

First of all, install gulp and gulp-jsdoc3 to your project: npm install gulp-jsdoc3 --save-dev Then add it to your gulpfile.js var gulp = require('gulp'); var jsdoc = require('gulp-jsoc3'); gulp.task('doc', function (cb){ gulp.src('src/*.js') .pipe(jsdoc(cb)); }); In order...

Objective-C First add the Social Framework to the XCode project. Import the #import "Social/Social.h" class to the required ViewController Twitter with text, image and link //- - To Share text on twitter - - if([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]) ...

Given a money system, is it possible to give an amount of coins and how to find a minimal set of coins corresponding to this amount. Canonical money systems. For some money system, like the ones we use in the real life, the "intuitive" solution works perfectly. For example, if the diffe...

The module keyword can be used to begin a module, which allows code to be organized and namespaced. Modules can define an external interface, typically consisting of exported symbols. To support this external interface, modules can have unexported internal functions and types not intended for public...

Typically, packages consist of one or more modules. As packages grow, it may be useful to organize the main module of the package into smaller modules. A common idiom is to define those modules as submodules of the main module: module RootModule module SubModule1 ... end module SubModul...

Believe it or not, the Label is one of the most crucial yet underappreciated View classes not only in Xamarin.Forms, but in UI development in general. It is seen as a rather boring line of text, but without that line of text it would be very difficult to convey certain ideas to the user. Label co...

An EntryCell is a Cell that combines the capabilities of a Label and an Entry. The EntryCell can be useful in scenarios when building some functionality within your application to gather data from the user. They can easily be placed into a TableView and be treated as a simple form. XAML <Ent...

A SwitchCell is a Cell that combines the capabilities of a Label and an on-off switch. A SwitchCell can be useful for turning on and off functionality, or even user preferences or configuration options. XAML <SwitchCell Text="Switch It Up!" /> Code var switchCell = new Switch...

A TextCell is a Cell that has two separate text areas for displaying data. A TextCell is typically used for information purposes in both TableView and ListView controls. The two text areas are aligned vertically to maximize the space within the Cell. This type of Cell is also commonly used to dis...

An ImageCell is exactly what it sounds like. It is a simple Cell that contains only an Image. This control functions very similarly to a normal Image control, but with far fewer bells and whistles. XAML <ImageCell ImageSource="http://d2g29cya9iq7ip.cloudfront.net/content/imag es/company...

You can consider a ViewCell a blank slate. It is your personal canvas to create a Cell that looks exactly the way you want it. You can even compose it of instances of multiple other View objects put together with Layout controls. You are only limited by your imagination. And maybe screen size. X...

Getting a table with vertical headers. Twitter bootstrap now support vertical header on a well formatted normal table. To achieve this just use .table-reflow class Use twitter bootstrap .table-reflow class on a well formed table to achieve a table with vertical headers. Additionally you can combin...

External Maps Plugin Open external maps to navigate to a specific geolocation or address. Option to launch with navigation option on iOS as well. Available on NuGet :[https://www.nuget.org/packages/Xam.Plugin.ExternalMaps/][1] XAML <StackLayout Spacing="10" Padding="10"&...