How to make splat, map and tuples be efficient

[aplavin]

@garazha-ilya

Is there an efficient way to make map return tuple?

Pass a tuple to map
As in, f(map(g, ("a","c","k"))...).

@garazha-ilya

How can I create tuples from arrays efficiently? Tuple([1,2,3]) is 150 times slower than tuple(1,2,3)

Either of these is efficient:

v = [1,2,3]
Tuple{Int,Int,Int}(v)
NTuple{3,Int}(v)