fig08_02.pl

PERL语言资料 可以用于PERL程序设计

#!/usr/bin/perl
# Fig 8.2: fig08_02.pl
# Substitution Example.

use strict;
use warnings;

my $string = "Hello to the world";

print "The original string is: \"$string\"\n";
$string =~ s/world/planet/;
print "s/world/planet/ changes string: $string \n\n";

our $_ = $string;
print "The original string is: \"$_\"\n";
s/planet/world/;
print "s/planet/world/ changes string: $_ \n\n";

print "The original string is: \"$_\"\n";
s(world)(planet);
print "s(world)(planet) changes string: $string \n\n";

$string = "This planet is our planet.";
print "$string\n";
my $matches = $string =~ s/planet/world/g;
print "$matches occurences of planet were changed to world.\n";
print "The new string is: $string\n";


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