Tutorial by Examples: g

The UILongPressGestureRecognizer lets you listen for a long press on a view. You can set the length of delay before the action method is called. Swift override func viewDidLoad() { super.viewDidLoad() // Long Press let longPressGesture = UILongPressGestureRecognizer(target: self, ...

Swipe gestures allow you to listen for the user moving their finger across the screen quickly in a certain direction. Swift override func viewDidLoad() { super.viewDidLoad() // Swipe (right and left) let swipeRightGesture = UISwipeGestureRecognizer(target: self, action: #selector(...

Pinches are a two fingered gesture where the fingers move closer or farther from each other. This gesture is generally used for resizing a view. Swift override func viewDidLoad() { super.viewDidLoad() // Pinch let pinchGesture = UIPinchGestureRecognizer(target: self, action: #sele...

Two fingers rotating around a center can be listened for with the UIRotationGestureRecognizer. This is generally used for rotating a view. Swift override func viewDidLoad() { super.viewDidLoad() // Rotate let rotateGesture = UIRotationGestureRecognizer(target: self, action: #selec...

Drag a gesture recognizer from the object library onto your view. Control drag from the gesture in the Document Outline to your View Controller code in order to make an Outlet and an Action. Notes This example comes from this fuller sample project demonstrating gesture recognizers.

//Creates a Random instance with a seed of 12345. Random random = new Random(12345L); //Gets a ThreadLocalRandom instance ThreadLocalRandom tlr = ThreadLocalRandom.current(); //Set the instance's seed. tlr.setSeed(12345L); Using the same seed to generate random numbers will return the sa...

Time series data can be stored as a ts object. ts objects contain information about seasonal frequency that is used by ARIMA functions. It also allows for calling of elements in the series by date using the window command. #Create a dummy dataset of 100 observations x <- rnorm(100) #Convert ...

Add below entries in pom.xml. <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-web</artifactId> <version>3.1.0.RELEASE</version> </dependency> <dependency> <groupId>org.springfr...

Suppose you have a hot observable for which you would love to keep the count of. It could be the IObservable<StockTick> and you want to keep count of the average trade volume. You can use Scan for that. var tradeVolume = stockTicks.Select(e => e.Price) .Scan(0.0m, (aggregated, newtick...

To write data to a file using Channel we need to have the following steps: First, we need to get an object of FileOutputStream Acquire FileChannel calling the getChannel() method from the FileOutputStream Create a ByteBuffer and then fill it with data Then we have to call the flip() method of ...

We can use PrintStream class to write a file. It has several methods that let you print any data type values. println() method appends a new line. Once we are done printing, we have to flush the PrintStream. import java.io.FileNotFoundException; import java.io.PrintStream; import java.time.Local...

Global basis: Blueprint API configuration is defined in /config/blueprint.js file. You can enable or disable all three types of blueprint routes for all controllers from there. As example, if you want to disable blueprint shortcut routes for all of your controllers but want to keep both acti...

set alpha 1 proc myproc {} { puts $alpha } myproc This code doesn't work because the two alphas are in different scopes. The command set alpha 1 creates a variable in the global scope (which makes it a global variable). The command puts $alpha is executed in a scope that is created ...

To print the value of a pointer to an object (as opposed to a function pointer) use the p conversion specifier. It is defined to print void-pointers only, so to print out the value of a non void-pointer it needs to be explicitly converted ("casted*") to void*. #include <stdlib.h> /*...

PHP provides support for the HTTP PUT method used by some clients to store files on a server. PUT requests are much simpler than a file upload using POST requests and they look something like this: PUT /path/filename.html HTTP/1.1 Into your PHP code you would then do something like this: <?p...

When dealing with an unbalanced design and/or non-orthogonal contrasts, Type II or Type III Sum of Squares are necessary. The Anova() function from the car package implements these. Type II Sum of Squares assumes no interaction between main effects. If interactions are assumed, Type III Sum of Squar...

The current frame rate (in FPS, Frames Per Second) and total number of SKNodes in the scene (nodeCount, each sprite is an SKNode but other objects in the scene are also SKNodes) can be shown in the bottom right hand corner of the view. These can be useful when turned on (set to true) for debugging ...

An SKView does not need to fill the whole screen and can share space with other UI controls. You can even have more than one SKView displayed at once if you wish. To create a smaller SKView amongst other controls with Interface Builder, first create a normal ViewController, then drag and drop a new...

The angular.copy function takes an object, array or a value and creates a deep copy of it. angular.copy() Example: Objects: let obj = {name: "vespa", occupation: "princess"}; let cpy = angular.copy(obj); cpy.name = "yogurt" // obj = {name: "vespa", ...

Navigation controller can be embed in each tabs using storyboard it self. It can be like in the screenshot added. To add a Navigation Controller to a View Controller connecting from Tab Bar Controller, here are the flow Select the view controller for which we need to add navigation controller. H...