[ruby-core:105843] [Ruby master Feature#11919] Passing a module directly

Issue #11919 has been updated by Eregon (Benoit Daloze).


I'm rather neutral about this.
On one hand, I think `using Module.new {` is clearer that there is a module involved and might avoid some confusion when learning about refinements,
OTOH it seems a fairly harmless shorthand which doesn't do too much magic.

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Feature #11919: Passing a module directly 
https://bugs.ruby-lang.org/issues/11919#change-94377

* Author: sawa (Tsuyoshi Sawada)
* Status: Feedback
* Priority: Normal
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Refinement requires a named module:

~~~ruby
module MyRefinement
  refine ...
  ...
end

using MyRefinement
~~~

but often (but not always), refinements are called by the `using` command only in once in a single file, and should not need to be named in such case. Also, the purpose of refinement is to not pollute classes with methods. Necessity to define a module and polluting the name space looks to me to go against this idea.

I would like to do:

~~~ruby
using Module.new do
  refine ...
  ...
end
~~~




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