map!

Usage

map! f
map!(f)(s)

Signature

map!:

(T $\to$ T) $\to$ % $\to$ %

Parameter	Type	Description
f	T $\to$ T	a map
s	%	a stream

Returns

map!(f)(s) returns the stream [f(x) for x in s], while map!(f) returns the mapping $s \to$ [f(x) for x in s]. In both cases, the stream s is modified in place and no copy is made.