mlhaufe

interface Publisher<T> {
    subscribe(s: Subscriber<T>): void
}

interface Subscriber<T> {
    onNext(value: T): void
    onError(e: Error): void
    onDone(): void
    onSubscribe(s: Subscription): void
}

mlhaufe

abstract class Comparable {
    abstract le(other: this): boolean
    min(other: this): Comparable {
        return this.le(other) ? this : other
    }
}

abstract class Ring {
    constructor(
        readonly zero: Ring,

mlhaufe

abstract class Command {
    abstract execute(): void
}

abstract class UndoableCommand extends Command {
    abstract undo(): void
}

class Direction {
    static readonly UP = 0

mlhaufe

abstract class Observer {
  abstract update(data?: any): void
}

abstract class Observable {
  protected _observers: Observer[] = []

  observe(observer: Observer) {
    if (this._observers.indexOf(observer) > -1)
      throw new Error('Observer already added')

mlhaufe

function main() {
    console.log("question1(0) == 0");
    console.assert(question1(0) == 0, `${question1(0)}`);
	console.log("question1(1) == 1");
	console.assert(question1(1) == 1, `${question1(1)}`);
	console.log("question1(7) == 13");
	console.assert(question1(7) == 13, `${question1(7)}`);
	console.log("question1(12) == 144");
	console.assert(question1(12) == 144, `${question1(12)}`);

mlhaufe

- The application is currently single threaded
- The following commands have been implemented:
    - exit
    - create <PATH>
    - open <PATH>
    - display
    - ls
    - cd <TFS> (partial)
    - mkdir <TFS> (partial). currently buggy due to nibble manipulation
    - import <PATH> <TFS> (partial) stub + error checking only

mlhaufe

// x, y :: {0,1}
var and = (x,y) => x * y,
    not = (x)   => 1 - x,
    or  = (x,y) => 1 - (1 - x) * (1 - y)

and(0,0) // 0
and(0,1) // 0
and(1,0) // 0
and(1,1) // 1

mlhaufe

function Bindable(proto: any, name: PropertyKey) {
    const desc = Object.getOwnPropertyDescriptor(proto, name)

    delete proto.name

    if ((proto['_dispatchEvent']) == undefined) {
        Object.defineProperty(proto, '_dispatchEvent', {
            value(event: Event) {
                
            }

mlhaufe

interface Boolean {
  ifTrue<T>(fn: () => T): T | undefined
  ifFalse<T>(fn: () => T): T | undefined
}

Object.assign(Boolean.prototype, {
  ifTrue(fn: Function) {
    return this ? fn.apply(this) : undefined
  },
  ifFalse(fn: Function) {

mlhaufe

// cyclicPerms(5)
//    "1,2,3,4,5
//    2,3,4,5,1
//    3,4,5,1,2
//    4,5,1,2,3
//    5,1,2,3,4" 
const cyclicPerms = (n) => 
    Array.from({length: n},(_,i) => i + 1)
    .map((_, i, xs) => [...xs, ...xs].slice(i, i+n))
    .join('\n')