#line 1 "/usr/local/lib/perl5/5.8.8/List/Util.pm" # List::Util.pm # # Copyright (c) 1997-2005 Graham Barr . All rights reserved. # This program is free software; you can redistribute it and/or # modify it under the same terms as Perl itself. package List::Util; use strict; use vars qw(@ISA @EXPORT_OK $VERSION $XS_VERSION $TESTING_PERL_ONLY); require Exporter; @ISA = qw(Exporter); @EXPORT_OK = qw(first min max minstr maxstr reduce sum shuffle); $VERSION = "1.18"; $XS_VERSION = $VERSION; $VERSION = eval $VERSION; eval { # PERL_DL_NONLAZY must be false, or any errors in loading will just # cause the perl code to be tested local $ENV{PERL_DL_NONLAZY} = 0 if $ENV{PERL_DL_NONLAZY}; eval { require XSLoader; XSLoader::load('List::Util', $XS_VERSION); 1; } or do { require DynaLoader; local @ISA = qw(DynaLoader); bootstrap List::Util $XS_VERSION; }; } unless $TESTING_PERL_ONLY; # This code is only compiled if the XS did not load # of for perl < 5.6.0 if (!defined &reduce) { eval <<'ESQ' sub reduce (&@) { my $code = shift; no strict 'refs'; return shift unless @_ > 1; use vars qw($a $b); my $caller = caller; local(*{$caller."::a"}) = \my $a; local(*{$caller."::b"}) = \my $b; $a = shift; foreach (@_) { $b = $_; $a = &{$code}(); } $a; } sub first (&@) { my $code = shift; foreach (@_) { return $_ if &{$code}(); } undef; } ESQ } # This code is only compiled if the XS did not load eval <<'ESQ' if !defined ∑ use vars qw($a $b); sub sum (@) { reduce { $a + $b } @_ } sub min (@) { reduce { $a < $b ? $a : $b } @_ } sub max (@) { reduce { $a > $b ? $a : $b } @_ } sub minstr (@) { reduce { $a lt $b ? $a : $b } @_ } sub maxstr (@) { reduce { $a gt $b ? $a : $b } @_ } sub shuffle (@) { my @a=\(@_); my $n; my $i=@_; map { $n = rand($i--); (${$a[$n]}, $a[$n] = $a[$i])[0]; } @_; } ESQ 1; __END__ #line 278