From: "headius (Charles Nutter)" <headius@...>
Date: 2013-04-17T03:12:30+09:00
Subject: [ruby-core:54358] [CommonRuby - Feature #8275] Add Module#public_const_get


Issue #8275 has been updated by headius (Charles Nutter).


rkh (Konstantin Haase) wrote:
> I was considering a boolean. However, const_get already takes a boolean argument indicating whether or not to include inherited constants, and two boolean arguments would not make a readable API, I guess.

Ahh, good point. I agree.

> Maybe this would be a good use case for keyword arguments if the API were to be extended?
> 
> For instance with the following signature:
> 
>     const_get(name, inherited = true, private: true)
> 
> Or even overload so that the old signature still works
> 
>     const_get(name, inherited = true)
> 
> but it might also support
> 
>     const_get(name, inherited: true, private: true)
> 
> What do you think?

Interesting ideas. I'm starting to lean back toward having a separate method rather than pushing too much logic into this one. Keyword args definitely help readability if we wanted to overload, but maybe we really don't need to overload it more than it is overloaded already?
----------------------------------------
Feature #8275: Add Module#public_const_get
https://bugs.ruby-lang.org/issues/8275#change-38633

Author: rkh (Konstantin Haase)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 


Right now, `const_get` will always return a constant, no matter the visibility, which is probably what we want most of the time. But if you for instance have code that does some automatic name to constant resolution, you might now want to leak private constants.

module Foo
  Bar = 42
  private_constant :Bar
end

# currently:
Foo::Bar # raises NameError
Foo.const_get("Bar") # => 42
Object.const_get("Foo::Bar") # => 42

# proposed:
Foo.public_const_get("Bar") # raises NameError
Object.public_const_get("Foo::Bar") # raises NameError


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