曾与蒿藜同雨露,한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.かつては雑草やヨモギと共に雨や露を分かち合っていたが、今では松やヒノキと共に霜や雪に耐えている。曾与蒿藜同雨露,Once sharing rain and dew with weeds and wormwood, now enduring frost and snow with pines and cypresses.终随松柏到冰霜.曾与蒿藜同雨露한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.,终随松柏到冰霜.譖セ荳手珍阯懷酔髮ィ髴イ�檎サ磯囂譚セ譟丞芦蜀ー髴�曾与蒿藜同雨露,鏇句笌钂胯棞鍚岄洦闇诧紝缁堥殢鏉炬煆鍒板啺闇�终随松柏到冰霜.曾与蒿藜同雨露,한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.曾与蒿藜同雨露,终随松柏到冰霜.
package overloading;
use warnings;
our $VERSION = '0.02';
my $HINT_NO_AMAGIC = 0x01000000; # see perl.h
require 5.010001;
sub _ops_to_nums {
require overload::numbers;
map { exists $overload::numbers::names{"($_"}
? $overload::numbers::names{"($_"}
: do { require Carp; Carp::croak("'$_' is not a valid overload") }
} @_;
}
sub import {
my ( $class, @ops ) = @_;
if ( @ops ) {
if ( $^H{overloading} ) {
vec($^H{overloading} , $_, 1) = 0 for _ops_to_nums(@ops);
}
if ( $^H{overloading} !~ /[^\0]/ ) {
delete $^H{overloading};
$^H &= ~$HINT_NO_AMAGIC;
}
} else {
delete $^H{overloading};
$^H &= ~$HINT_NO_AMAGIC;
}
}
sub unimport {
my ( $class, @ops ) = @_;
if ( exists $^H{overloading} or not $^H & $HINT_NO_AMAGIC ) {
if ( @ops ) {
vec($^H{overloading} ||= '', $_, 1) = 1 for _ops_to_nums(@ops);
} else {
delete $^H{overloading};
}
}
$^H |= $HINT_NO_AMAGIC;
}
1;
__END__
=head1 NAME
overloading - perl pragma to lexically control overloading
=head1 SYNOPSIS
{
no overloading;
my $str = "$object"; # doesn't call stringification overload
}
# it's lexical, so this stringifies:
warn "$object";
# it can be enabled per op
no overloading qw("");
warn "$object";
# and also reenabled
use overloading;
=head1 DESCRIPTION
This pragma allows you to lexically disable or enable overloading.
=over 6
=item C<no overloading>
Disables overloading entirely in the current lexical scope.
=item C<no overloading @ops>
Disables only specific overloads in the current lexical scope.
=item C<use overloading>
Reenables overloading in the current lexical scope.
=item C<use overloading @ops>
Reenables overloading only for specific ops in the current lexical scope.
=back
=cut