> Probably same with fields/methods with a postfix ?
It's not a “postfix ?”, it's literally just “?” being part of the identifier name. (It's convention for methods that are boolean predicates.)
Also, Ruby doesn't have fields. (It has instance variables, but they don't have dotted access, so they aren't in the same namespace as methods of the same object the way fields are.)
It's a postfix sigil, even if it's part of the identifier name. You're not allowed to put ? in the middle of an identifier. (I use ruby and elixir, so this is second nature to me. It might not be for others).
I'm aware ruby doesn't have fields, I called it fields/methods because it's a method in ruby but people in other languages will read it as a field, which it is, a good percentage of the time.
It's not a “postfix ?”, it's literally just “?” being part of the identifier name. (It's convention for methods that are boolean predicates.)
Also, Ruby doesn't have fields. (It has instance variables, but they don't have dotted access, so they aren't in the same namespace as methods of the same object the way fields are.)