impl block for generic type overriden by specific type
impl block for generic type overriden by specific type
I want to do basically this:
rust
struct MyStruct < T> {
data: T
}
impl < T> for MyStruct < T> {
fn foo() {
println!("Generic")
}
}
impl for MyStruct < u32> {
fn foo() {
println!("u32")
}
}
I have tried doing
rust
impl < T: !u32> for MyStruct < T> {
...
}
But it doesn't seem to work. I've also tried various things with traits but none of them seem to work. Is this even possible?
EDIT: Fixed formatting
What you are looking for is called specialization.
It is currently unstable and incomplete, which means you can activate it by adding the macros
#![feature(specialization)]and#![allow(incomplete_features)]at the beginning of the file. But you have no guarantee that it will work the same way on the next version of rust.Yeah, that seems like it would work! Unfortunately I can't use unstable features. I'll keep it in mind for other projects though.