2 ms·

Trait aliases will make some of those unwieldly declarations a bit easier on the eyes #![feature(trait_alias)] trait Map<T> = Fn(T) -> T; fn compo

Trait aliases will make some of those unwieldly declarations a bit easier on the eyes #![feature(trait_alias)] trait Map<T> = Fn(T) -> T; fn compose <T>(f1: impl Map<T>, f2: impl Map<T>) -> impl Map<T> { |n| f1(f2(n)) }

The_rationalist 7y ago
This is a nice feature, do you know any other language that has something similar?
- Psyonic 7y ago
  Scala's type aliases are pretty similar.
- jcelerier 7y ago
  looks doable with C++ using : template<typename T> using Map = std::function<T (T)>;