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　晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 . Prv8 Shell

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Current File : //usr/share/doc/perl-Test-Simple/t/lib/MyOverload.pm

package Overloaded;  ##no critic (Modules::RequireFilenameMatchesPackage)

use strict;

sub new {
    my $class = shift;
    bless { string => shift, num => shift }, $class;
}

package Overloaded::Compare;

use strict;
our @ISA = qw(Overloaded);

# Sometimes objects have only comparison ops overloaded and nothing else.
# For example, DateTime objects.
use overload
  q{eq} => sub { $_[0]->{string} eq $_[1] },
  q{==} => sub { $_[0]->{num} == $_[1] };

package Overloaded::Ify;

use strict;
our @ISA = qw(Overloaded);

use overload
  q{""} => sub { $_[0]->{string} },
  q{0+} => sub { $_[0]->{num} };

1;

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