fig09_06.pl

来自「PERL语言资料 可以用于PERL程序设计」· PL 代码 · 共 46 行

#!/usr/bin/perl
# Fig. 9.6: fig09_06.pl
# Demonstrating special properties of chomp.

my $string1 = "This is a string";
print "\$string1 is \"$string1\"";
print "\n\nChanging \$/ to \"g\" \n\n";

$/ = "g";

# Removing last character if it is equal to "g"
chomp ( $string1 );
print "The new \$string1 is \"$string1\"\n";

my $string2 = "This is a string with three newlines\n\n\n";

print "\n\$string2 now is \"$string2\" <-- Where \$string2 ends.";

print "\n\nChanging \$/ to \"\" \n\n";

$/ = "";

# All trailing newlines are removed
my $numberNewlines = chomp ( $string2 );

print "\$string2 was called with chomp.\n";
print "It now has no newlines: \"$string2\"";

# chomp returns the number of characters removed
print "\nchomp returned the number $numberNewlines.\n";

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