fig08_10.pl

来自「PERL语言资料 可以用于PERL程序设计」· PL 代码 · 共 41 行

#!usr/bin/perl
# Fig 8.10: fig08_10.pl
# Testing the look behind assertion.

use strict;
use warnings;

my $string1 = "i be hungry.";
my $string2 = "we be here.";
my $string3 = "he be where?";

conjugate( $string1 );
conjugate( $string2 );
conjugate( $string3 );

sub conjugate
{
   my $string = shift;
   print "$string\n";
   $string =~ s/(?<=i )be/am/;
   $string =~ s/(?<=we )be/are/;
   $string =~ s/(?<=he )be/is/;
   print "$string\n";
}

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