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Diffstat (limited to 'doc/re.rdoc')
| -rw-r--r-- | doc/re.rdoc | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/doc/re.rdoc b/doc/re.rdoc index 5f49ae228d..b912ca1d32 100644 --- a/doc/re.rdoc +++ b/doc/re.rdoc @@ -32,11 +32,15 @@ method. === <tt>=~</tt> operator <tt>=~</tt> is Ruby's basic pattern-matching operator. When one operand is a -regular expression and is a string (this operator is equivalently defined by -Regexp and String). If a match is found, the operator returns index of first -match in string, otherwise it returns +nil+. +regular expression and the other is a string then the regular expression is +used as a pattern to match against the string. (This operator is equivalently +defined by Regexp and String so the order of String and Regexp do not matter. +Other classes may have different implementations of <tt>=~</tt>.) If a match +is found, the operator returns index of first match in string, otherwise it +returns +nil+. /hay/ =~ 'haystack' #=> 0 + 'haystack' =~ /hay/ #=> 0 /a/ =~ 'haystack' #=> 1 /u/ =~ 'haystack' #=> nil |