#!perl use strict; use warnings; sub lambda { my $fn = pop; my @foo = @_; # foo references $x, etc. sub { # Put values into referenced params ${$foo[$_]} = $_[$_] for 0..$#_; &$fn; } } my $x = 3; my $closure = lambda do { my ($x, $y); \($x, $y) => sub { print "Got $x and $y\n" } } ; $closure->($_, $_+1) for (1..4); print "And my X is $x\n";