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Discussion on: JavaScript reduce() method

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lexlohr profile image
Alex Lohr

I don't really get that "underwater" question. It is only iterating over the array once, whereas the filter/map variant will iterate once to create a filtered representation of the array and once more to map it.

And yes, the reduce will be somewhat faster, even though the native array methods are pretty optimized already.

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dailydevtips1 profile image
Chris Bongers Author

That was my question indeed if it actually is only 1 iteration.
Very cool stuff actually