File: map2.doc

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\DOC map2

\TYPE {map2 : (((* # **) -> ***) -> (* list # ** list) -> *** list)}

\SYNOPSIS
Maps a binary function over two lists to create one new list.

\DESCRIBE
{map2 f ([x1;...;xn],[y1;...;yn])} returns {[f(x1,y1);...;f(xn,yn)]}.

\FAILURE
Fails with {map2} if the two lists are of different lengths.

\EXAMPLE
{
#map2 $+ ([1;2;3],[3;2;1]);;
[4; 4; 4] : int list
}
\SEEALSO
map, uncurry.

\ENDDOC