Feature #16703
Updated by sawa (Tsuyoshi Sawada) about 4 years ago
I often see code that intends to remove a portion of the namespace from a module/class name like this:
```ruby
class A; class B class C; end end end
A::B::C.name.delete_prefix("A::") # => "B::C"
A::B::C.name.delete_prefix("A::B::") A::B::C.name.delete_prefix("A::C::") # => "C"
```
I think a large portion of the use cases of the method `String#delete_prefix` belongs to are such use cases.
I propose to let `Module#name` take an optional parameter that expresses the name space. The parameter should be either a module, string, or a symbol.
I am not sure whether a positional argument or a keyword argument is better.
Positional argument:
```ruby
A::B::C.name("A") # => "B::C"
A::B::C.name(:A) # => "B::C"
A::B::C.name(A) # => "B::C"
A::B::C.name("A::B") # => "C"
A::B::C.name(:"A::B") # => "C"
A::B::C.name(A::B) # => "C"
```
Keyword argument:
```ruby
A::B::C.name(namespace: "A") # => "B::C"
A::B::C.name(namespace: :A) # => "B::C"
A::B::C.name(namespace: A) # => "B::C"
A::B::C.name(namespace: "A::B") # => "C"
A::B::C.name(namespace: :"A::B") # => "C"
A::B::C.name(namespace: A::B) # => "C"
```