TIL: Named Structs

Naming structs makes intent clearer (and avoids annoying Rubocop).

I'm used to writing structs like this:

Person = Struct.new(:firstname, :lastname)
person = Person.new('Billy', Ruffian')

Better is to declare the struct like this:

Struct.new('Person', :firstname, :lastname)
person = Struct::Person.new('Billy', 'Ruffian')