Current File : //opt/alt/ruby18/share/ri/1.8/system/UnboundMethod/cdesc-UnboundMethod.yaml
--- !ruby/object:RI::ClassDescription
attributes: []
class_methods: []
comment:
- !ruby/struct:SM::Flow::P
body: "Ruby supports two forms of objectified methods. Class <tt>Method</tt> is used to represent methods that are associated with a particular object: these method objects are bound to that object. Bound method objects for an object can be created using <tt>Object#method</tt>."
- !ruby/struct:SM::Flow::P
body: Ruby also supports unbound methods; methods objects that are not associated with a particular object. These can be created either by calling <tt>Module#instance_method</tt> or by calling <tt>unbind</tt> on a bound method object. The result of both of these is an <tt>UnboundMethod</tt> object.
- !ruby/struct:SM::Flow::P
body: Unbound methods can only be called after they are bound to an object. That object must be be a kind_of? the method's original class.
- !ruby/struct:SM::Flow::VERB
body: " class Square\n def area\n @side * @side\n end\n def initialize(side)\n @side = side\n end\n end\n\n area_un = Square.instance_method(:area)\n\n s = Square.new(12)\n area = area_un.bind(s)\n area.call #=> 144\n"
- !ruby/struct:SM::Flow::P
body: "Unbound methods are a reference to the method at the time it was objectified: subsequent changes to the underlying class will not affect the unbound method."
- !ruby/struct:SM::Flow::VERB
body: " class Test\n def test\n :original\n end\n end\n um = Test.instance_method(:test)\n class Test\n def test\n :modified\n end\n end\n t = Test.new\n t.test #=> :modified\n um.bind(t).call #=> :original\n"
constants: []
full_name: UnboundMethod
includes: []
instance_methods:
- !ruby/object:RI::MethodSummary
name: ==
- !ruby/object:RI::MethodSummary
name: arity
- !ruby/object:RI::MethodSummary
name: bind
- !ruby/object:RI::MethodSummary
name: clone
- !ruby/object:RI::MethodSummary
name: inspect
- !ruby/object:RI::MethodSummary
name: name
- !ruby/object:RI::MethodSummary
name: owner
- !ruby/object:RI::MethodSummary
name: to_s
name: UnboundMethod
superclass: Object
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