Module SingleForwardable
In: forwardable.rb

The SingleForwardable module provides delegation of specified methods to a designated object, using the methods def_delegator and def_delegators. This module is similar to Forwardable, but it works on objects themselves, instead of their defining classes.

Also see the example at forwardable.rb.

Methods

Public Instance methods

def_delegator(accessor, method, ali = method)
def_delegators(accessor, *methods)

Defines a method method which delegates to obj (i.e. it calls the method of the same name in obj). If new_name is provided, it is used as the name for the delegate method.

See the example at forwardable.rb.

[Source]

# File forwardable.rb, line 200
  def def_singleton_delegator(accessor, method, ali = method)
    accessor = accessor.id2name if accessor.kind_of?(Integer)
    method = method.id2name if method.kind_of?(Integer)
    ali = ali.id2name if ali.kind_of?(Integer)

    instance_eval("def \#{ali}(*args, &block)\nbegin\n\#{accessor}.__send__(:\#{method}, *args,&block)\nrescue Exception\n$@.delete_if{|s| /^\\\\(__FORWARDABLE__\\\\):/ =~ s} unless Forwardable::debug\nKernel::raise\nend\nend\n", "(__FORWARDABLE__)", 1)
  end

Shortcut for defining multiple delegator methods, but with no provision for using a different name. The following two code samples have the same effect:

  single_forwardable.def_delegators :@records, :size, :<<, :map

  single_forwardable.def_delegator :@records, :size
  single_forwardable.def_delegator :@records, :<<
  single_forwardable.def_delegator :@records, :map

See the example at forwardable.rb.

[Source]

# File forwardable.rb, line 187
  def def_singleton_delegators(accessor, *methods)
    for method in methods
      def_singleton_delegator(accessor, method)
    end
  end

[Validate]