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public class OnSwipeListener implements View.OnTouchListener { private final GestureDetector gestureDetector; public OnSwipeListener(Context context) { gestureDetector = new GestureDetector(context, new GestureListener()); } @Override public boolean onTouch(Vi...

public class GestureActivity extends Activity implements GestureDetector.OnDoubleTapListener, GestureDetector.OnGestureListener { private GestureDetector mGestureDetector; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedIn...

Create a new console application with one line in the Main method: Console.WriteLine("Hello World") Remember the path to the .vbproj file and replace it in the example. Create a new Console Application and install the Microsoft.CodeAnalysis NuGet package and try the following code: Cons...

In general, IBOutlets are used to connect an user interface object to another object, in this case a UIViewController. The connection serves to allow for the object to be affected my code or events programmatically. This can be done simply by using the assistant from a storyboard and control-clickin...

If the shift count value is a negative value then both left shift and right shift operations are undefined1: int x = 5 << -3; /* undefined */ int x = 5 >> -3; /* undefined */ If left shift is performed on a negative value, it's undefined: int x = -5 << 3; /* undefined */ I...

Detailed instructions on getting sequelize.js set up or installed.

Less has been one of the most popular CSS Pre-processors, and has also been widely deployed in numerous front-end frameworks like Bootstrap, Foundation, etc. The Less Compiler is a JavaScript based compiler, which can be obtained from a Content Delivery Network: <script src="//cdnjs.cloudfl...

Specifying the -gui command line option when running an ANTLR grammar in the test rig will result in a window popping up with a visual representation of the parse tree. For example: Given the following grammar: JSON.g4 /** Taken from "The Definitive ANTLR 4 Reference" by Terence Parr */...

#demo-element { background: @theme-color; color: contrast(@theme-color, black, white, 50%); } @theme-color: red; The above example will set the text color of the element as white if the background-color is dark and vice-versa. This is achieved using the contrast() color operation functi...

The presence of a tsconfig.json file indicates that the current directory is the root of a TypeScript enabled project. Initializing a TypeScript project, or better put tsconfig.json file, can be done through the following command: tsc --init As of TypeScript v2.3.0 and higher this will create t...

In Tcl, a control structure is basically just another command. This is one possible implementation of a do ... while / do ... until control structure. proc do {body keyword expression} { uplevel 1 $body switch $keyword { while {uplevel 1 [list while $expression $body]} u...

Add the following code to the onCreate()/onResume() method: SensorManager sensorManager; Sensor mAccelerometer; final float movementThreshold = 0.5f; // You may have to change this value. boolean isMoving = false; float[] prevValues = {1.0f, 1.0f, 1.0f}; float[] currValues = new float[3]; ...

string path = @"c:\path\to\file.txt"; File.Delete(path); While Delete does not throw exception if file doesn't exist, it will throw exception e.g. if specified path is invalid or caller does not have the required permissions. You should always wrap calls to Delete inside try-catch bloc...

6.0 Default SET format is MMDDhhmm[[CC]YY][.ss], that's (2 digits each) For example, to set July 17'th 10:10am, without changing the current year, type: adb shell 'date 07171010.00' Tip 1: the date change will not be reflected immediately, and a noticable change will happen only after the syst...

Put your dbname.sqlite or dbname.db file in assets folder of your project. public class Databasehelper extends SQLiteOpenHelper { public static final String TAG = Databasehelper.class.getSimpleName(); public static int flag; // Exact Name of you db file that you put in as...

Another powerful & mature concurrency tool in Haskell is Software Transactional Memory, which allows for multiple threads to write to a single variable of type TVar a in an atomic manner. TVar a is the main type associated with the STM monad and stands for transactional variable. They're used m...

Intersection of Hashes To get the intersection of two hashes, return the shared keys the values of which are equal: hash1 = { :a => 1, :b => 2 } hash2 = { :b => 2, :c => 3 } hash1.select { |k, v| (hash2.include?(k) && hash2[k] == v) } # => { :b => 2 } Union (...

Many unbound generic parameters, like those used in a static method, cannot be recovered at runtime (see Other Threads on Erasure). However there is a common strategy employed for accessing the type satisfying a generic parameter on a class at runtime. This allows for generic code that depends on ac...

Synopsis A fully functional demo of Firebase v3 Web authentication viewable here. Sign in with Facebook, Github, Google, Twitter, password based, and anonymous accounts. The code, available on Github, is easy to read and follow and is well documented. The focus is on the fully functional authent...

It is common for company to set up it's own nuget server for distribution of packages across different teams. Go to Solution Explorer and click Right Mouse button then choose Manage NuGet Packages for Solution In window that opens click on Settings Click on + in top right corner the...