From: "Eregon (Benoit Daloze)" <noreply@...>
Date: 2022-09-16T06:52:59+00:00
Subject: [ruby-core:109915] [Ruby master Feature#10320] require into module

Issue #10320 has been updated by Eregon (Benoit Daloze).


This NilClass definition, even if reassigning global ::NilClass doesn't have any effect on nil though, isn't it?
Or do you actually define mod::NilClass = NilClass before loading the ActiveSupport files?

----------------------------------------
Feature #10320: require into module
https://bugs.ruby-lang.org/issues/10320#change-99161

* Author: sowieso (So Wieso)
* Status: Open
* Priority: Normal
----------------------------------------
When requiring a library, global namespace always gets polluted, at least with one module name. So when requiring a gem with many dependencies, at least one constant enters global namespace per dependency, which can easily get out of hand (especially when gems are not enclosed in a module).

Would it be possible to extend require (and load, require_relative) to put all content into a custom module and not into global namespace?

Syntax ideas:

~~~ruby
require 'libfile', into: :Lib   # keyword-argument
require 'libfile' in Lib   # with keyword, also defining a module Lib at current binding (unless defined? Lib)
require_qualified 'libfile', :Lib
~~~

This would also make including code into libraries much easier, as it is well scoped.

~~~ruby
module MyGem
����require 'needed' in Need

����def do_something
��������Need::important.process!
����end
end
 # library user is never concerned over needed's content
~~~

Some problems to discuss:

* requiring into two different modules means loading the file twice?
* monkeypatching libraries should only affect the module ����� auto refinements?
* maybe also allow a binding as argument, not only a module?
* privately require, so that required constants and methods are not accessible from the outside of a module (seems to difficult)
* what about $global constants, read them from global scope but copy-write them only to local scope?

Similar issue:
https://bugs.ruby-lang.org/issues/5643



-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>