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Regular Expression Pocket Reference, 2nd Edition
book

Regular Expression Pocket Reference, 2nd Edition

by Tony Stubblebine
July 2007
Intermediate to advanced content levelIntermediate to advanced
128 pages
2h 39m
English
O'Reilly Media, Inc.
Content preview from Regular Expression Pocket Reference, 2nd Edition

Name

split

split /PATTERN/, EXPR, LIMIT
split /PATTERN/, EXPR
split /PATTERN/
split

Return a list of substrings surrounding matches of PATTERN in EXPR. If LIMIT is included, the list contains substrings surrounding the first LIMIT matches. The pattern argument is a match operator, so use m if you want alternate delimiters (e.g., split m{PATTERN}). The match permits the same modifiers as m{}. Table 9 lists the after-match variables.

Table 1-9. Perl after-match variables

Variable

Meaning

$1, $2, ...

Captured submatches.

@-

$-[0]: offset of start of match.

$-[n]: offset of start of $n.

@+

$+[0]: offset of end of match.

$+[n]: offset of end of $n.

$+

Last parenthesized match.

$'

Text before match. Causes all regular expressions to be slower. Same as substr($input, 0, $-[0]).

$&

Text of match. Causes all regular expressions to be slower. Same as substr($input, $−[0], $+[0] − $−[0]).

$`

Text after match. Causes all regular expressions to be slower. Same as substr($input, $+[0]).

$^N

Text of most recently closed capturing parentheses.

$*

If true, /m is assumed for all matches without a /s.

$^R

The result value of the most recently executed code construct within a pattern match.

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Publisher Resources

ISBN: 9780596514273Errata Page