Returns the offset (in characters) of the beginning of the specified match.
When non-negative integer argument n
is given, returns the offset of the beginning of the n
th match:
m = /(.)(.)(\d+)(\d)/.match("THX1138.") # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8"> m[0] # => "HX1138" m.begin(0) # => 1 m[3] # => "113" m.begin(3) # => 3 m = /(т)(е)(с)/.match('тест') # => #<MatchData "тес" 1:"т" 2:"е" 3:"с"> m[0] # => "тес" m.begin(0) # => 0 m[3] # => "с" m.begin(3) # => 2
When string or symbol argument name
is given, returns the offset of the beginning for the named match:
m = /(?<foo>.)(.)(?<bar>.)/.match("hoge") # => #<MatchData "hog" foo:"h" bar:"g"> m[:foo] # => "h" m.begin('foo') # => 0 m[:bar] # => "g" m.begin(:bar) # => 2
Related: MatchData#end
, MatchData#offset
, MatchData#byteoffset
.