rec_for([1..3],["a".."c"],[10..13]); my @tuple; sub rec_for { if (@_) { my $a_list = shift; for my $x (@$a_list) { push @tuple, $x; rec_for(@_); pop @tuple; } } else { print "tuple: @tuple\n"; } } #### /usr/bin/perl -w /home/lanx/B/PL/PM/recursive_for.pl tuple: 1 a 10 tuple: 1 a 11 tuple: 1 a 12 tuple: 1 a 13 tuple: 1 b 10 tuple: 1 b 11 ... #### rec_for(a=>[1..3],b=>["a".."c"],c=>[10..13]);