- publishing free software manuals
Perl Language Reference Manual
by Larry Wall and others
Paperback (6"x9"), 724 pages
ISBN 9781906966027
RRP £29.95 ($39.95)

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Examples (assuming an ASCII platform)

$str = "Perl";
$str =~ /\x50/;    # Match, "\x50" is "P".
$str =~ /\x50+/;   # Match, "\x50" is "P", it is repeated at least once.
$str =~ /P\x2B/;   # No match, "\x2B" is "+" and taken literally.
/\x{2603}\x{2602}/ # Snowman with an umbrella.
                   # The Unicode character 2603 is a snowman,
                   # the Unicode character 2602 is an umbrella.
/\x{263B}/         # Black smiling face.
/\x{263b}/         # Same, the hex digits A - F are case insensitive.
ISBN 9781906966027Perl Language Reference ManualSee the print edition