Performance of map vs starmap.

[Steve D'Aprano]

On Mon, 30 Oct 2017 09:10 pm, Kirill Balunov wrote:

> Sometime ago I asked this question at SO [1], and among the responses
> received was paragraph:
> 
>  - `zip` re-uses the returned `tuple` if it has a reference count of 1 when
> the `__next__` call is made.
>  - `map` build a new `tuple` that is passed to the mapped function every
> time a `__next__` call is made.
> 
> Why can not `map` use the same approach as `zip`?


It possibly could, if somebody could be bothered to make that
micro-optimization.



-- 
Steve
“Cheer up,” they said, “things could be worse.” So I cheered up, and sure
enough, things got worse.