Ruby Programming/Syntax/Hooks
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Ruby provides callbacks, to, for example, know when a new method is defined (later) in a class.
Here is a list of known callbacks.
const_missing
[edit | edit source]class Object def self.const_missing c p 'missing const was', c end end
or more
class Object class << self alias :const_missing_old :const_missing def const_missing c p 'const missing is', c const_missing_old c end end end