Also, is there any performance impact of using `fo...

# stdlib

[gabrielfv]

Also, is there any performance impact of using for (a in withIndex()) ... rather than var i = 0; for (a in iterable) { ...; a++ }?

[gildor]

Yes, because withIndex creates IndexedValue for each item

[gildor]

I always use forEachIndexed instead of for + withIndex

[gabrielfv]

I was wondering that, because it could happen to generate lazily rather than eagerly, which could make the impact negligible depending on the application.

[gildor]

IndexedValue generated lazily on each element, but if you traverse all elements will be generated + 1 object for each element