Class Regexp
In: lib/core/facets/regexp/arity.rb
lib/core/facets/regexp/to_re.rb
Parent: Object

Methods

arity   to_re   to_regexp  

Public Instance methods

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

Simply returns itself. Helpful when converting strings to regular expressions, where regexp might occur as well —in the same vien as using to_s on symbols. The parameter is actaully a dummy parameter to coincide with String#to_re.

  /abc/.to_re  #=> /abc/

CREDIT: Trans

Like to_re, but following Ruby‘s formal definitions, only a Regular expression type object will respond to this.

Note that to be of much real use this should be defined in core Ruby.

CREDIT: Florian Gross

[Validate]