Another recursive solution using a subroutine that takes a block of code to execute against a "chunked" list.
use strict;
use warnings;
use 5.010;
sub groupsOf (&$@);
my @list = ( q{a} .. q{z} );
say for groupsOf { qq{@_,} } 5, @list;
say for groupsOf { qq{@_,} } 7, @list;
sub groupsOf (&$@)
{
my $rcToRun = shift;
my $groupsOf = shift;
my $rcDoIt;
$rcDoIt = sub
{
$rcToRun->(
map shift, 1 .. ( @_ < $groupsOf ? @_ : $groupsOf )
),
@_ ? &$rcDoIt : ();
};
&$rcDoIt;
}
I hope this is of interest.
Update: Oops, forgot to post the output :-(
a b c d e,
f g h i j,
k l m n o,
p q r s t,
u v w x y,
z,
a b c d e f g,
h i j k l m n,
o p q r s t u,
v w x y z,
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