Ruby self and klass

ruby-self-klass.md

Ruby's self and klass explanation

References

1. https://yehudakatz.com/2009/11/15/metaprogramming-in-ruby-its-all-about-the-self/

2. https://blog.yugui.jp/entry/846

Important notes

1. When invoking a method without an explicit receiver, self is the receiver

2. The klass, a.k.a default definee, is syntactically the outer class in a normal method body

3. When define a method:

• If there's an explicit receiver, the method is added to the eigenclass of the receiver
• If there's no explicit receiver, the default definee will have the method as an instance method