Let's assume that we have following generator:
var gen = function* () {
for (var i = 0; i < 10; i++ ) {
yield i;
}
};
What is the most efficient way to loop through the iterator ?
Currently I do it with checking manually if done property is set to true or not:
var item
, iterator = gen();
while (item = iterator.next(), !item.done) {
console.log( item.value );
}
1 Answer
The best way to iterate any iterable (an object which supports @@iterator), is to use for..of, like this
'use strict';
function * gen() {
for (var i = 0; i < 10; i++) {
yield i;
}
}
for (let value of gen()) {
console.log(value);
}
Or, if you want an Array out of it, then you can use Array.from, like this
console.log(Array.from(gen());
// [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ]
