kotovalexarian-likes-github/ruby--ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
Code Releases Activity

* doc/syntax/calling_methods.rdoc: Added a Method Lookup section.

Browse source 
* doc/syntax/refinements.rdoc (Method Lookup):  Clarified that
  refinement methods are looked up in classes, not instances.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38928 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
drbrain 2013-01-24 07:54:45 +00:00
parent 96af5360a4
commit dbcf20069a
3 changed files with 32 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

25
doc/syntax/calling_methods.rdoc
View file

@ -322,3 +322,28 @@ avoid a warning.
Unlike the splat operator described above the <code>&</code> operator has no
commonly recognized name.
== Method Lookup
When you send a message Ruby looks up the method that matches the name of the
message for the receiver. Methods are stored in classes and modules so method
lookup walks these, not the objects themselves.
Here is the order of method lookup for the receiver's class or module +R+:
* The prepended modules of +R+ in reverse order
* For a matching method in +R+
* The included modules of +R+ in reverse order
If +R+ is a class with a superclass, this is repeated with +R+'s superclass
until a method is found.
Once a match is found method lookup stops.
If no match is found this repeats from the beginning, but looking for
+method_missing+. The default +method_missing+ is BasicObject#method_missing
which raises a NameError when invoked.
If refinements (an experimental feature) are active the method lookup changes.
See the {refinements documentation}[rdoc-ref:syntax/refinements.rdoc] for
details.