Trait Alias enso_prelude::Str

trait Str = Into<String> + AsRef<str>;

Abstraction for any kind of string as an argument. Functions defined as fn test<S:Str>(s: Str) { ... } can be called with String, &String, and &str without requiring caller to know the implementation details. Moreover, the definition can decide if it needs allocation or not. Calling s.as_ref() will never allocate, while s.into() will allocate only when necessary.