projekt kivitendo

=item cross BLOCK ARRAY ARRAY

Evaluates BLOCK for each combination of elements in ARRAY1 and ARRAY2

and returns a new list consisting of BLOCK's return values.

The two elements are set to $a and $b.

Note that those two are aliases to the original value so changing them

will modify the input arrays.

  # append each to each

  @a = qw/a b c/;

  @b = qw/1 2 3/;

  @x = pairwise { "$a$b" } @a, @b;

  # returns a1, a2, a3, b1, b2, b3, c1, c2, c3

As cross expects an array but returns a list it is not directly chainable

at the moment. This will be corrected in the future.

=cut