Issue #21155 has been updated by artur86 (Artur *). Hanmac (Hans Mackowiak) wrote in #note-2:
@artur86 the difference between these two are the module nesting
See this doku about this: https://ruby-doc.org/3.2/syntax/modules_and_classes_rdoc.html#label-Constant...
In Short, the second variant can raise NameError if you don't use `MyNamespace` everywhere.
I edited the description. ---------------------------------------- Feature #21155: File scoped namespace declarations as in C# https://bugs.ruby-lang.org/issues/21155#change-112086 * Author: artur86 (Artur *) * Status: Open ---------------------------------------- Given there is a file with a class that needs to be namespaced. There are basically two options currently. `module` implies indenting the class by one level: ```ruby module MyNamespace class MyClass; end end ``` Scope resolution operator (`::`) needs no indentation, but it works differently than using `module` and repeating module name for every class inside seems tedious and verbose to me: ```ruby class MyNamespace::MyClass; end class MyNamespace::MyAnotherClass; end class MyNamespace::OneMoreClass; end end ``` Neither options enables to declare a namespace once at the top of a file and let Ruby treat all the subsequent constants to be under that namespace. Wouldn't it be better to implement something similar in Ruby? This is implemented in C# under the name of [File Scoped Namespaces](https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/proposals...). [The discussion on StackOverflow](https://stackoverflow.com/q/40809717/2987689). -- https://bugs.ruby-lang.org/