Differences in `Base.Iterators.map` and `IterTools.imap`

[PatrickHaecker]

We should document the difference between Base.Iterators.map and IterTools.imap or document that there is no difference.

I think that there is no difference, but I am not certain that

map(f, arg, args...) = Base.Generator(f, arg, args...)

and

imap(mapfunc, it1, its...) = (mapfunc(xs...) for xs in zip(it1, its...))

always will behave identical. Both create a Base.Generator and I think the zip does not change here anything as Generator is also using zip:

Generator(f, I1, I2, Is...) = Generator(a->f(a...), zip(I1, I2, Is...))

Can someone confirm, that they are identical, so that we can create a PR to document it?

[oxinabox]

They are identical and we should delete ours. it is just that this is older than that being in Base.Iterators

[PatrickHaecker]

Would you prefer doing this yourself or getting a PR? I am hesitant, as this PR would imply a SemVer version update. Would this update be included in the PR? I can't promise that I'll find the time, but it probably does not hurt to document the preferred way.

[omus]

I was going to suggest adding Iterators.map to Compat.jl but Iterators.map has existed since Julia 1.6 so it doesn't seem worth it