Previously we had the Copy trait, which when implemented by trait T
allowed one to write
[Zero::zero(), ..SZ] where T implemented the Zero trait. But now I am
not sure how to get that behavior. Concretely, here is the code I
want to get compiling. (Just to check, I added both Clone and
DeepClone, even though they don't automatically allow implicit
copyability).
----
use std::num::Zero;
enum Constants {
SZ = 2
}
struct Foo<T>([T, ..SZ]);
impl<T : Clone + DeepClone + Zero> Foo<T> {
pub fn new() -> Foo<T> {
Foo([Zero::zero(), ..SZ])
}
}
----
The error I get is:
error: copying a value of non-copyable type `T`
tmp.rs:155 Foo([Zero::zero(), ..SZ])
Any way to do this? Or is this no longer supported for general types?
Any intentions to add this behavior again? Otherwise, I can't even
initialize my struct while being agnostic to the specific value of SZ.
Ashish
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