fig13_08.pl

来自「PERL语言资料 可以用于PERL程序设计」· PL 代码 · 共 40 行

#!/usr/bin/perl
# Figure 13.8: fig13_08.pl
# A simple closure example

use warnings;
use strict;

sub animalInFood
{
   my $x = shift();
   return sub
   {
      my $y = shift();
      print( "There is a $x in my $y!\n" );
   };
}

my $flyInFood = animalInFood( "fly" );
my $frogInFood = animalInFood( "frog" );

&$flyInFood( "soup" );
&$frogInFood( "coffee" );


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