Feature #19775: Use the callback `main::const_added`

• Status: Closed
• Assignee: -
• Target version: -

[UlyssesZhan (Ulysses Zhan)]

In #17881, it was accepted that Module#const_added is called when there is a new constant added to the namespace of the module.
Since main can also serve as a namespace, it should also be able to use this callback.

def const_added name
  p name
end
Foo = 1 # => :Foo

[mame (Yusuke Endoh)]

• Status changed from Open to Closed

Since top-level constants are defined under Object, their definition can be hooked by defining Object.const_added.

def Object.const_added(name)
  p name
end

Foo = 1 #=> :Foo