Given that, isn't it odd that JS still encourages map/filter array iterations that make multiple passes over a single array? I.e. that it hasn't yet introduced some sort of comprehension or itertools-with-compilation feature that does array processing in a single pass?
A big reason why I say screw map, filter, reduce, etc. and my "default way" never stopped being ordinary for loops.
Still a great way to avoid intermediate allocations, though.
Array.map(e => f(e))
for(e in Array) {
f(e)
}
Array.forEach(...)
is the more apt analog there as it wouldn't be generating a new array of the return like map would.
Array.forEach(e => f(e))
Map is when you want to return a new collection with each original item in it mapped to a "different" thing.