fig09_05.pl

来自「PERL语言资料 可以用于PERL程序设计」· PL 代码 · 共 45 行

#!usr/bin/perl
# Fig. 9.3: chopChomp.pl
# Using the chop and chomp functions

use warnings;
use strict;

print "Input something and we'll print it: ";
my $string = <STDIN>;

print "\nOur input ( $string ) contains a newline. Remove it:\n";
chop( $string );

print "\nThis is more like it: '$string' without the newline.\n";

# Removing the last character, regardless of what it is
my $character = chop( $string );  
print "\nOops! We removed $character; now it is '$string.'\n";

chomp( $string );  # Last character removed only if a newline
print "\nAhh. This is safer. Still '$string.'\n";

my @array = ( "One\n", "Two\n", "Three", "Four", "Five\n" );

# We can apply chomp to all elements of an array
my $newlines = chomp ( @array );  
print "\nWe just removed $newlines newlines from that list!\n";
print "\nThe list is now @array.";

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