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Class URegexp |
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See [docs/UNICODE_REGEXPS] for details of patterns.
Replacement Text
The replacement text for find-and-replace operations may contain references to capture-group text from the find. References are of the form $n, where n is the number of the capture group.
Character Descriptions
$n The text of capture group n will be substituted for $n. n must be >= 0 and not
greater than the number of capture groups. A $ not followed by a digit has no special meaning,
and will appear in the substitution text as itself, a $.
\ Treat the following character as a literal, suppressing any special meaning. Backslash escaping in
substitution text is only required for '$' and '\', but may be used on any other character without bad effects.
Valid URegexp options are: COMMENTS, MULTILINE, DOTALL, IGNORECASE, which can be OR‘ed.
| All Methods |
| Public Class methods |
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URegexp.new(str [,options]) URegexp.new(regexp) |
| Public Instance methods |
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rxp === str => true or false |
Case Equality—Synonym for URegexp#=~ used in case statements.
a = "HELLO".u
case a
when ure("^[a-z]*$"); print "Lower case\n"
when ure("^[A-Z]*$"); print "Upper case\n"
else; print "Mixed case\n"
end
produces:
Upper case
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uregex.match(str) => matchdata or nil uregex =~ (str) => matchdata or nil |
Returns a UMatch object describing the match, or nil if there was no match.
ure("(.)(.)(.)").match("abc".u)[2] #=> "b"
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uregex.match(str) => matchdata or nil uregex =~ (str) => matchdata or nil |
Returns a UMatch object describing the match, or nil if there was no match.
ure("(.)(.)(.)").match("abc".u)[2] #=> "b"
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uregex.split(str, limit) |
Divides str into substrings based on a regexp pattern, returning an array of these substrings. str is divided where the pattern matches.
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uregex.to_u |