View t-t-t-action-replay-5.js
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cellView.addEventListener('click', | |
() => gameEngine.handleEvent( | |
{ | |
name: 'turn-taken-event', | |
player: viewModel.currentPlayer, | |
row: rIndex, | |
col: cIndex, | |
gameboard: gameBoard | |
})); |
View t-t-t-action-replay-4.js
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let handleTurnTaken = (turnTakenEvent) => { | |
if(turnTakenEvent.gameboard[turnTakenEvent.row][turnTakenEvent.col] !== 'X' && turnTakenEvent.gameboard[turnTakenEvent.row][turnTakenEvent.col] !== 'O') { | |
console.log('Player ' + turnTakenEvent.player + ' has taken a turn'); | |
let nextPlayer = turnTakenEvent.player === 'O' ? 'X' : 'O'; | |
let nextGameBoard = turnTakenEvent.gameboard.map( | |
(row, rIndex) => { | |
return row.map((col, cIndex) => { | |
return rIndex === turnTakenEvent.row && cIndex === turnTakenEvent.col ? | |
turnTakenEvent.player : col |
View t-t-t-action-replay-3.js
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let view = function() { | |
let viewModel = { | |
currentPlayer: 'X', | |
winner: null | |
}; | |
let gameBoard = new Array(3).fill(new Array(3).fill('')); | |
eventDispatcher.subscribe('game-board-updated-event', gameBoardUpdatedEvent => { | |
viewModel.currentPlayer = gameBoardUpdatedEvent.nextPlayer; |
View t-t-t-action-replay-2.js
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let eventDispatcher = function() { | |
let replaying = false; | |
let events = []; | |
let subscribers = {}; | |
let dispatchEvent = (ev) => { | |
if (!replaying) { | |
events.push(ev); | |
} | |
for (const sub of subscribers[ev.name]) { |
View t-t-t-action-replay-1.js
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const tests = () => { | |
let testsPassed; | |
let gameboardWithNoCompletedRowsOrColumnsButAllCellsCompleted = [ | |
['X','O', 'X'], | |
['O','O', 'X'], | |
['O','X', 'O'] | |
] | |
testsPassed = !winChecker.thereIsAWinner(gameboardWithNoCompletedRowsOrColumnsButAllCellsCompleted); | |
console.log('Test thereIsAWinner gameboardWithNoCompletedRowsOrColumnsButAllCellsCompleted ' + testsPassed); |
View PersistTheList8.kt
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fun <E> dropWhile(list: List<E>, f: (E) -> Boolean): List<E> { | |
tailrec fun loop(remaining: List<E>): List<E> = | |
when(remaining) { | |
is Empty -> remaining | |
is Cons -> if (f(remaining.head)) loop(remaining.tail) else remaining | |
} | |
return loop(list) | |
} |
View PersistTheList7.kt
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tailrec fun <E> dropWhile(list: List<E>, f: (E) -> Boolean): List<E> = | |
when(list) { | |
Empty -> Empty | |
is Cons -> if (f(list.head)) dropWhile(list.tail, f) else list | |
} |
View PersistTheList6.kt
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fun <E> dropWhile(list: List<E>, f: (E) -> Boolean): List<E> = | |
when(list) { | |
Empty -> Empty | |
is Cons -> if (f(list.head)) dropWhile(list.tail, f) else list | |
} | |
fun main() { | |
val myList = Cons(1, Cons(2, Cons(3, Cons(4, Empty)))) | |
dropWhile(myList) { it < 3 }.let(::println) |
View PersistTheList5.kt
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sealed class List<out E> | |
object Empty: List<Nothing>() { | |
override fun toString()= "[]" | |
} | |
data class Cons<E>(val head: E, val tail: List<E>): List<E>() { | |
override fun toString(): String = "$head :: $tail" | |
} | |
fun main() { |
View PersistTheList4.kt
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fun dropWhile(list: List<Int>, f: (Int) -> Boolean) |
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