FWIW: I (@Rondy) am not the author of the content presented here, which is an outline from Edmond Lau's book. I've just copy-pasted it from somewhere and saved as a personal gist, before it got popular on newsnews.ycombinator.com. I don't remember where exactly the original source is from and neither could find the author's name, so I cannot give him/her the proper credits.
| suspend fun fibonacci(): Flow<BigInteger> = flow { | |
| var x = BigInteger.ZERO | |
| var y = BigInteger.ONE | |
| while (true) { | |
| emit(x) | |
| x = y.also { | |
| y += x | |
| } | |
| } | |
| } |
| def get_square(val): | |
| """The callback.""" | |
| return val ** 2 | |
| def caller(func, val): | |
| return func(val) | |
| caller(get_square, 5) | |
| print caller(get_square, 5) |
| <!DOCTYPE html> | |
| <html> | |
| <title>Web Page Design</title> | |
| <head> | |
| <script> | |
| function calculate(num1, num2, callbackFunction) { | |
| return callbackFunction(num1, num2); | |
| } | |
| function calcProduct(num1, num2) { |
| /* | |
| * This is a simple C program to demonstrate the usage of callbacks | |
| * The callback function is in the same file as the calling code. | |
| * The callback function can later be put into external library like | |
| * e.g. a shared object to increase flexibility. | |
| * | |
| */ | |
| #include <stdio.h> | |
| #include <string.h> |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| /* The calling function takes a single callback as a parameter. */ | |
| void PrintTwoNumbers(int (*numberSource)(void)) { | |
| int val1 = numberSource(); | |
| int val2 = numberSource(); | |
| printf("%d and %d\n", val1, val2); | |
| } |
| val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS) | |
| intent.setData(Uri.parse("package:" + getString(R.string.app_package))); | |
| startActivity(intent); |
| private val exceptionHandler = CoroutineExceptionHandler { _, exception -> | |
| LogHelper.log(TAG, "User Observer Exception: ${exception.stackTrace}", Log.ERROR) | |
| } | |
| private suspend fun userHasClientCodes(user : FirebaseUser, request: UsersRequest, token : String): String? = | |
| withContext(Dispatchers.IO+ exceptionHandler) { | |
| val response = CustomerAreaAPI.createUser(request, "Bearer ${token}") | |
| if (response != null && response !is String) { | |
| if (AppPreferences.firstTimeNotification == 0) { | |
| AppPreferences.firstTimeNotification = 1 |
| /** | |
| * Take the Long milliseconds returned by the system and stored in Room, | |
| * and convert it to a nicely formatted string for display. | |
| * | |
| * EEEE - Display the long letter version of the weekday | |
| * MMM - Display the letter abbreviation of the nmotny | |
| * dd-yyyy - day in month and full year numerically | |
| * HH:mm - Hours and minutes in 24hr format | |
| */ | |
| @SuppressLint("SimpleDateFormat") |
| import android.view.View | |
| import it.diceworld.dicehome.utility.OnSingleClickListener | |
| fun View.setGone(){ | |
| this.visibility = View.GONE | |
| } | |
| fun View.setVisible(){ | |
| this.visibility = View.VISIBLE | |
| } |
