From: "fxn (Xavier Noria) via ruby-core" Date: 2023-06-22T09:29:36+00:00 Subject: [ruby-core:114000] [Ruby master Feature#19742] Introduce `Module#anonymous?` Issue #19742 has been updated by fxn (Xavier Noria). @ioquatix oh wait, we might have two questions in our minds. I am like: Can a module whose `mod.name` is not `nil` be `anonymous?`. Answer is, if we want to agree with the current docs, it cannot be, because `Module#name` has to return `nil` for anonymous modules. Then, I guess you had in mind the definition of `Module#anonymous?`. That needs an "iff" indeed. However, if you have to define, then making that condition an "iff" could not be controversial, it is the natural extension to me. ---------------------------------------- Feature #19742: Introduce `Module#anonymous?` https://bugs.ruby-lang.org/issues/19742#change-103658 * Author: ioquatix (Samuel Williams) * Status: Open * Priority: Normal ---------------------------------------- As a follow-on , I'd like propose we introduce `Module#anonymous?`. In some situations, like logging/formatting, serialisation/deserialization, debugging or meta-programming, we might like to know if a class is a proper constant or not. However, this brings about some other issues which might need to be discussed. After assigning a constant, then removing it, the internal state of Ruby still believes that the class name is permanent, even thought it's no longer true. e.g. ``` m = Module.new m.anonymous? # true M = m m.anonyomous # false Object.send(:remove_const, :M) M # uninitialized constant M (NameError) m.anonymous? # false ``` Because RCLASS data structure is not updated after the constant is removed, internally the state still has a "permanent class name". I want to use this proposal to discuss this issue and whether there is anything we should do about such behaviour (or even if it's desirable). Proposed PR: https://github.com/ruby/ruby/pull/7966 cc @fxn -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- ruby-core@ml.ruby-lang.org To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org ruby-core info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-core.ml.ruby-lang.org/