> More specifically the newtype pattern is mostly so that you can implement foreign traits on foreign types. For some definition of "mostly". I use most of my

> More specifically the newtype pattern is mostly so that you can implement foreign traits on foreign types. For some definition of "mostly". I use most of my newtypes neither in Rust nor in Haskell to implement traits, but most of the time to declare - newtypes ;) that wrap other (primitive) types.