Sha256: 0749530e30078efcef0d62ec3a565c93a6e02a47d46d10f646055a58bec865e1
Contents?: true
Size: 336 Bytes
Versions: 7
Compression:
Stored size: 336 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
7 entries across 7 versions & 2 rubygems