nivrith

export class Queue<T> {
  constructor(private length: number, private data: T[] = []) {}

  add(record) {
    const length = this.data.unshift(record);
    if (length > this.length) {
      this.remove();
    }
  }

nivrith

export class Queue<T> {
  constructor(private length: number, private data: T[] = []) {}

  add(record) {
    const length = this.data.unshift(record);
    if (length > this.length) {
      this.remove();
    }
  }

nivrith

class Range {
    constructor(start, stop, step=1) { 
        this.start = start;
        this.stop = stop;
        this.step = step; 
        this.cursor = start - step; 
    }

    [Symbol.iterator]() {
        let {start, stop, step, cursor};

nivrith

for (let number of new Range(1, 5)) {
  console.log(number);
}

//1
//2
//3
//4
//5

nivrith

const numbersArray = [...new Range(1, 10)];
// [1, 2, 3, 4, 5, 6, 7, 8, 9 ,10]

nivrith

const [first, ...rest] = new Range(1, 10);
console.log(first); // 1
console.log(rese); // [2, 3, 4, 5, 6, 7, 8, 9, 10]

nivrith

const queue = new Queue(10);

queue.add(1);
queue.add(2);
queue.add(3);
queue.add(4);


for(let item of queue) {
  console.log(item);

nivrith

const numbers = [1, 2, 3, 4];

for (const number of numbers) {
  console.log(number)
}

// 1
// 2
// 3
// 4

nivrith

let petName;
if(person && person.pet && person.pet.name) {
    petName = person.pet.name;
}

//Can be condensed to 
let petName = person?.pet?.name;

nivrith

let length= 0;
let name= "";

let length = number || 25;
let name = name || "John";