Tutorial by Examples: l

Describe your service access interface through .aidl file: // IRemoteService.aidl package com.example.android; // Declare any non-default types here with import statements /** Example service interface */ interface IRemoteService { /** Request the process ID of this service, to do evil...

SharedPreferences Manager (Singleton) class to read and write all types of data. import android.content.Context; import android.content.SharedPreferences; import android.util.Log; import com.google.gson.Gson; import java.lang.reflect.Type; /** * Singleton Class for accessing SharedPref...

A request for the top 10 most recently active StackOverflow posts using the Stack Exchange API. package main import ( "encoding/json" "fmt" "net/http" "net/url" ) const apiURL = "https://api.stackexchange.com/2.2/posts?" ...

You may pull (download) files from the device by executing the following command: adb pull <remote> <local> For example: adb pull /sdcard/ ~/ You may also push (upload) files from your computer to the device: adb push <local> <remote> For example: adb push ~/im...

To get a value from the map, you just have to do something like:00 value := mapName[ key ] If the map contains the key, it returns the corresponding value. If not, it returns zero-value of the map's value type (0 if map of int values, "" if map of string values...) m := map[string]s...

If you want to cancel an alarm, and you don't have a reference to the original PendingIntent used to set the alarm, you need to recreate a PendingIntent exactly as it was when it was originally created. An Intent is considered equal by the AlarmManager: if their action, data, type, class, and ca...

Executing code after 1.5 seconds: Handler handler = new Handler(); handler.postDelayed(new Runnable() { @Override public void run() { //The code you want to run after the time is up } }, 1500); //the time you want to delay in milliseconds Executing code repeatedly every...

An algorithmic problem is specified by describing the complete set of instances it must work on and of its output after running on one of these instances. This distinction, between a problem and an instance of a problem, is fundamental. The algorithmic problem known as sorting is defined as follows:...

__CLASS__ magic constant returns the same result as get_class() function called without parameters and they both return the name of the class where it was defined (i.e. where you wrote the function call/constant name ). In contrast, get_class($this) and get_called_class() functions call, will both ...

int[] arr = new int[] { 0, 10, 20, 30}; // Get Console.WriteLine(arr[2]); // 20 // Set arr[2] = 100; // Get the updated value Console.WriteLine(arr[2]); // 100

An array can be declared and filled with the default value using square bracket ([]) initialization syntax. For example, creating an array of 10 integers: int[] arr = new int[10]; Indices in C# are zero-based. The indices of the array above will be 0-9. For example: int[] arr = new int[3] {7,9,...

Support for type hinting array parameters (and return values after PHP 7.1) was added in PHP 5.1 with the keyword array. Any arrays of any dimensions and types, as well as empty arrays, are valid values. Support for type hinting callables was added in PHP 5.4. Any value that is_callable() is valid ...

Type hinting for classes and interfaces was added in PHP 5. Class type hint <?php class Student { public $name = 'Chris'; } class School { public $name = 'University of Edinburgh'; } function enroll(Student $student, School $school) { echo $student->name . ' is b...

const fs = require('fs'); const readline = require('readline'); const rl = readline.createInterface({ input: fs.createReadStream('text.txt') }); // Each new line emits an event - every time the stream receives \r, \n, or \r\n rl.on('line', (line) => { console.log(line); }); ...

const readline = require('readline'); const rl = readline.createInterface({ input: process.stdin, output: process.stdout }); rl.question('What is your name?', (name) => { console.log(`Hello ${name}!`); rl.close(); });

Detailed instructions on getting spring-security set up or installed.

To remove an existing alias, use: unalias {alias_name} Example: # create an alias $ alias now='date' # preview the alias $ now Thu Jul 21 17:11:25 CEST 2016 # remove the alias $ unalias now # test if removed $ now -bash: now: command not found

Sometimes you may want to bypass an alias temporarily, without disabling it. To work with a concrete example, consider this alias: alias ls='ls --color=auto' And let's say you want to use the ls command without disabling the alias. You have several options: Use the command builtin: command...

Note: GRAILS requires a Java JDK installed (a runtime environment JRE is not sufficient) on your system, before setting up Grails. Please refer to, how to install JDK. As of this writing, it is recommended to install the latest JDK. For Mac OSX, Linux, Cygwin, Solaris and FreeBSD: The simplest w...

[alias] logp=log --pretty=format:'%h %ad | %s%d [%an]' --graph --date=short lg = log --graph --date-order --first-parent \ --pretty=format:'%C(auto)%h%Creset %C(auto)%d%Creset %s %C(green)(%ad) %C(bold cyan)<%an>%Creset' lgb = log --graph --date-order --branches --first-paren...