- 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)

Sales of this book support The Perl Foundation! Get a printed copy>>>

Hash %%s missing the % in argument %d of %s()

(D deprecated) Really old Perl let you omit the % on hash names in some spots. This is now heavily deprecated.

ISBN 9781906966027Perl Language Reference ManualSee the print edition