Ruby | MatchData | length/size

概要

MatchData#length -> Fixnum
MatchData#size -> Fixnum

詳細

部分文字列数を取得

サンプルコード

require 'tbpgr_utils'

"hogehigehage" =~ /(h\wge)(h\wge)(h\wge)/

bulk_puts_eval binding, <<-EOS
$~
$~.size
$~.length
EOS

__END__
下記はTbpgrUtils gemの機能
bulk_puts_eval

https://rubygems.org/gems/tbpgr_utils
https://github.com/tbpgr/tbpgr_utils

出力

$~        # =>   #<MatchData "hogehigehage" 1:"hoge" 2:"hige" 3:"hage">
$~.size   # => 4
$~.length # => 4

参照

http://docs.ruby-lang.org/ja/2.0.0/method/MatchData/i/length.html