Sha256: e7f060301005740c75d7062909c79f21cab22537ece18fb253dcec858763cd10
Contents?: true
Size: 335 Bytes
Versions: 20
Compression:
Stored size: 335 Bytes
Contents
class Regexp
# Returns the number of backreferencing subexpressions.
#
# /(a)(b)(c)/.arity #=> 3
# /(a(b(c)))/.arity #=> 3
#
# Note that this is not perfect, especially with regards to \x
# and embedded comments.
#
# CREDIT: Trans
def arity
source.scan( /(?!\\)[(](?!\?[#=:!>-imx])/ ).length
end
end
Version data entries
20 entries across 19 versions & 2 rubygems