Metaprogramming Ruby

Object Model

Methods

Block

• Blocks are not objects -> Proc are
• Block contain both the code and a set of binding.
• When a block is defined. It grabs the bindings that exist at that moment(not in the method) and carries them.

Scope

• The previous bindings will be replaced by a new set when enter a new scope
• Whenever the program changes scope, binding set will be replaced except instance variables of a method which call another method on the same object