Tutorial by Examples: r

<TextBlock x:Name="MyControl" Text="Hello, world!" /> var rtb = new RenderTargetBitmap(); await rtb.RenderAsync(MyControl); // Render control to RenderTargetBitmap // Get pixels from RTB IBuffer pixelBuffer = await rtb.GetPixelsAsync(); byte[] pixels = ...

IRandomAccessStreamReference bitmap = GetBitmap(); IRandomAccessStreamWithContentType stream = await bitmap.OpenReadAsync(); BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream); var pixels = await decoder.GetPixelDataAsync(); var outStream = new InMemoryRandomAccessStream(); // Cr...

Factory is available in run phase. The Factory recipe constructs a new service using a function with zero or more arguments (these are dependencies on other services). The return value of this function is the service instance created by this recipe. Factory can create a service of any type, w...

Service is available in run phase. The Service recipe produces a service just like the Value or Factory recipes, but it does so by invoking a constructor with the new operator. The constructor can take zero or more arguments, which represent dependencies needed by the instance of this type. ...

Provider is available both in configuration and run phases. The Provider recipe is syntactically defined as a custom type that implements a $get method. You should use the Provider recipe only when you want to expose an API for application-wide configuration that must be made before the appli...

ImageSource result = new BitmapImage(new Uri("ms-appx:///Assets/Windows_10_Hero.png")); Use result to set the Source property of an Image control either though a Binding or code-behind

public static async Task<ImageSource> FromStorageFile(StorageFile sf) { using (var randomAccessStream = await sf.OpenAsync(FileAccessMode.Read)) { var result = new BitmapImage(); await result.SetSourceAsync(randomAccessStream); return result; } } ...

public static async Task<WriteableBitmap> RenderUIElement(UIElement element) { var bitmap = new RenderTargetBitmap(); await bitmap.RenderAsync(element); var pixelBuffer = await bitmap.GetPixelsAsync(); var pixels = pixelBuffer.ToArray(); var writeableBitmap = new W...

public static async Task<IRandomAccessStream> ConvertWriteableBitmapToRandomAccessStream(WriteableBitmap writeableBitmap) { var stream = new InMemoryRandomAccessStream(); BitmapEncoder encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId, stream); Stream pixe...

Quick start A rule describes when and how certain files (rule's targets) are created. It can also serve to update a target file if any of the files required for its creation (target's prerequisites) are newer than the target. Rules follow the syntax below: (Note that commands following a rule are ...

In class-based programming, the factory method pattern is a creational pattern that uses factory methods to deal with the problem of creating objects without having to specify the exact class of the object that will be created. Wikipedia reference protocol SenderProtocol { func send(packa...

The pipe (%>%) operator could be used in combination with dplyr functions. In this example we use the mtcars dataset (see help("mtcars") for more information) to show how to sumarize a data frame, and to add variables to the data with the result of the application of a function. librar...

Writing with roxygen2 roxygen2 is a package created by Hadley Wickham to facilitate documentation. It allows to include the documentation inside the R script, in lines starting by #'. The different parameters passed to the documentation start with an @, for example the creator of a package will by...

In certain cases we need to cancel an image download request in Picasso before the download has completed. This could happen for various reasons, for example if the parent view transitioned to some other view before the image download could be completed. In this case, you can cancel the image down...

Copy and Paste following class in your package: public class MLRoundedImageView extends ImageView { public MLRoundedImageView(Context context) { super(context); } public MLRoundedImageView(Context context, AttributeSet attrs) { super(context, attrs); } ...

nrs = [1, 2, 3, 4, 5, 6, 7, 8, 9] lets = ['a', 'b', 'c', 'd', 'e', 'f'] println GroovyCollections.transpose([nrs, lets]) .collect {le -> [(le[0]):le[1]]}.collectEntries { it } or println [nrs,lets].transpose().collectEntries{[it[0],it[1]]} // [1:a, 2:b, 3:c, 4:d, 5:e, 6:f...

A BroadcastReceiver is basically a mechanism to relay Intents through the OS to perform specific actions. A classic definition being "A Broadcast receiver is an Android component which allows you to register for system or application events." LocalBroadcastManager is a way to send ...

AsyncTask is an abstract Class and does not inherit the Thread class. It has an abstract method doInBackground(Params... params), which is overridden to perform the task. This method is called from AsyncTask.call(). Executor are part of java.util.concurrent package. Moreover, AsyncTask contains 2 ...

A numeric type used to store 16-bit positive integers. ushort is an alias for System.UInt16, and takes up 2 bytes of memory. Valid range is 0 to 65535. ushort a = 50; // 50 ushort b = 65536; // Error, cannot be converted ushort c = unchecked((ushort)65536); // Overflows (wraps around to 0) ...

These are URL schemes supported by native apps on iOS, OS X, and watchOS 2 and later. Opening link in Safari: Objective-C NSString *stringURL = @"http://stackoverflow.com/"; NSURL *url = [NSURL URLWithString:stringURL]; [[UIApplication sharedApplication] openURL:url]; Swift: let s...