|Perl Language Reference Manual|
by Larry Wall and others
Paperback (6"x9"), 724 pages
RRP £29.95 ($39.95)
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28.1.11 Character sets and character encoding
Assume very little about character sets.
Assume nothing about numerical values (
chr) of characters.
Do not use explicit code point ranges (like \xHH-\xHH); use for
example symbolic character classes like
Do not assume that the alphabetic characters are encoded contiguously (in the numeric sense). There may be gaps.
Do not assume anything about the ordering of the characters. The lowercase letters may come before or after the uppercase letters; the lowercase and uppercase may be interlaced so that both "a" and "A" come before "b"; the accented and other international characters may be interlaced so that ä comes before "b".
|ISBN 9781906966027||Perl Language Reference Manual||See the print edition|