Lithium - Curso de ES2015 - Aula 11

es2015-aula11.js

//Ex 1
function* idMaker() {
  var index = 0
  while ( index < 3 )
    yield index++
}

var gen = idMaker()

console.log( gen.next() ) // 0
console.log( gen.next() ) // 1
console.log( gen.next() ) // 2
console.log( gen.next() ) // undefined
console.log( gen.next() ) // undefined

//Ex 2
function* g1() {
  yield 2
  yield 3
  yield 4
}

function* g2() {
  yield 1
  yield* g1()
  yield 5
}

var iterator = g2()

console.log( iterator.next() ) // { value: 1, done: false }
console.log( iterator.next() ) // { value: 2, done: false }
console.log( iterator.next() ) // { value: 3, done: false }
console.log( iterator.next() ) // { value: 4, done: false }
console.log( iterator.next() ) // { value: 5, done: false }
console.log( iterator.next() ) // { value: undefined, done: true }