Creating an multidimensional array from ES6 generator

Question

Here is a generator creating a normal array. What is the quickest way of creating a multi dimensional array?

let seq = [...makeSequence(100)];

* makeSequence(max) {
   for (let i = 0; i < max; i++) {
     yield i;
   }
}

And what do you expect to be iterated? The outer array? What would an individual yield return? An array? — trincot
– trincot, Commented Nov 5, 2017 at 18:43

trincot · Accepted Answer · 2017-11-05 18:45:00Z

1

If the iterator should return the top-level elements (which would be arrays themselves), then you could use recursion and so support any depth of array nesting:

function * makeSequence(max, dimensionCount = 1) {
   for (let i = 0; i < max; i++) {
     yield dimensionCount <= 1 ? i : [...makeSequence(max, dimensionCount-1)];
   }
}

let seq = [...makeSequence(5, 2)];

console.log(seq);

answered Nov 5, 2017 at 18:45

trincot

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