On Saturday, 25 July 2015 at 12:09:34 UTC, Andrei Alexandrescu
wrote:
However, making
it built-in feels really convenient in Rust:
- considerably less function declaration visual noise
- much better error messages: trying to use methods of T not
defined by
a trait will result in compile-time error even without
instantiating the
template
Yah, building stuff in does have its advantages.
I feel it is not as much about "built-in vs library", but
"generic vs templates" - somewhat deeper ideological difference
that consequently calls for different tools. Metaprogramming with
traits in Rust is inconvenient to the point of being almost
impossible but generics have a very strong static API
verification. In D you can get destroyed by flow of deeply nested
error messages but the magic you can do with templates with
minimal effort investment is beyond comparison.
Different values, different trade-offs.
