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Set mark in cursor location: C-space or C-@ Kill region (Cut): C-w Copy region to kill ring: M-w or Esc-w Yank (Paste) most recently killed: C-y Yank (Paste) next last killed: M-y or Esc-y Kill killis the command used by Emacs for the deletion of ...

Document level It is on by default, but you can have an extra layer of protection by placing Option Explicit On at the top of the code file. The option will apply to the whole document. Project level You can switch it on via the menu in Visual Studio: Project > [Project] Properties > Com...

To create mixins, simply declare lightweight classes that can be used as "behaviours". class Flies { fly() { alert('Is it a bird? Is it a plane?'); } } class Climbs { climb() { alert('My spider-sense is tingling.'); } } class Bulletproof { ...

The System.String class supports a number of methods to convert between uppercase and lowercase characters in a string. System.String.ToLowerInvariant is used to return a String object converted to lowercase. System.String.ToUpperInvariant is used to return a String object converted to upper...

The System.String.Join method allows to concatenate all elements in a string array, using a specified separator between each element: string[] words = {"One", "Two", "Three", "Four"}; string singleString = String.Join(",", words); // singleString =...

String Concatenation can be done by using the System.String.Concat method, or (much easier) using the + operator: string first = "Hello "; string second = "World"; string concat = first + second; // concat = "Hello World" concat = String.Concat(first, second); // ...

Configure profiling for a project via stack. First build the project with the --profile flag: stack build --profile GHC flags are not required in the cabal file for this to work (like -prof). stack will automatically turn on profiling for both the library and executables in the project. The next...

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]; ...

Consider the following code as an illustration: public String joinWords(List<String> words) { String message = ""; for (String word : words) { message = message + " " + word; } return message; } Unfortunate this code is inefficient if the w...

Get all files in Directory var FileSearchRes = Directory.GetFiles(@Path, "*.*", SearchOption.AllDirectories); Returns an array of FileInfo, representing all the files in the specified directory. Get Files with specific extension var FileSearchRes = Directory.GetFiles(@Path, "*...

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...

By going to Settings >> Keymap A window will popup showing All the Editor Actions with the their name and shortcuts. Some of the Editor Actions do not have shortcuts. So right click on that and add a new shortcut to that. Check the image below

When a Google Map is displayed in lite mode clicking on a map will open the Google Maps application. To disable this functionality you must call setClickable(false) on the MapView, e.g.: final MapView mapView = (MapView)view.findViewById(R.id.map); mapView.setClickable(false);

com.android.dex.DexException: Multiple dex files define Lcom/example/lib/Class; This error occurs because the app, when packaging, finds two .dex files that define the same set of methods. Usually this happens because the app has accidentally acquired 2 separate dependencies on the same library....

public class PlaySound extends Activity implements OnTouchListener { private SoundPool soundPool; private int soundID; boolean loaded = false; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { su...

Having more than one element with the same ID is a hard to troubleshoot problem. The HTML parser will usually try to render the page in any case. Usually no error occurs. But the pace could end up in a mis-behaving web page. In this example: <div id="aDiv">a</div> <div id...

To ignore a test, simply add the @Ignore annotation to the test and optionally provide a parameter to the annotation with the reason. @Ignore("Calculator add not implemented yet.") @Test public void testPlus() { assertEquals(5, calculator.add(2,3)); } Compared to commenting the...

A spring bean can be configured such that it will register only if it has a particular value or a specified property is met. To do so, implement Condition.matches to check the property/value: public class PropertyCondition implements Condition { @Override public boolean matches(ConditionC...

Find meaningful names for computation units. Use for comprehensions or map to combine computations together. Let's say you have something like this: if (userAuthorized.nonEmtpy) { makeRequest().map { case Success(respone) => someProcessing(..) if (resendToUser) { ...

By default: Use val, not var, wherever possible. This allows you to take seamless advantage of a number of functional utilities, including work distribution. Use recursion and comprehensionss, not loops. Use immutable collections. This is a corrolary to using val whenever possible. Focus on da...