force_bind

Adds UnboundMethod#force_bind to bind an unbound method to class (or any object of any type). It basically bypasses the argument type checking that #bind has.

Requirements

• Ruby 1.9.1 or greater (does not work in Ruby 1.8.x)

Example

Bind an instance method to its class (making it act like a class method):

class Foo
  def bar
    puts "I'm inside #{self}"
  end
end

Foo.new.bar
#=> "I'm inside #<Foo:0x123456>"

meth = Foo.instance_method(:bar).force_bind(Foo)
meth.call
#=> "I'm inside Foo"

You can also use this to rebind the instance method of any object to any other object:

class A
  def foo; self end
end

class B; end

meth = A.instance_method(:foo).force_bind(B.new)
meth.call
#=> #<B:0x123456>