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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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7.35 No-ops

Perl doesn't officially have a no-op operator, but the bare constants 0 and 1 are special-cased to not produce a warning in a void context, so you can for example safely do

1 while foo();
ISBN 9781906966027Perl Language Reference ManualSee the print edition