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#![feature(generic_const_exprs)]
#![allow(incomplete_features)]
trait TensorDimension {
const DIM: usize;
}
trait TensorSize: TensorDimension {
fn size(&self) -> [usize; Self::DIM];
}
trait Broadcastable: TensorSize + Sized {
type Element;
fn lazy_updim<const NEWDIM: usize>(&self, size: [usize; NEWDIM]) {}
}
struct BMap<'a, R, T: Broadcastable, F: Fn(T::Element) -> R, const DIM: usize> {
reference: &'a T,
closure: F,
}
impl<'a, R, T: Broadcastable, F: Fn(T::Element) -> R, const DIM: usize> TensorDimension
for BMap<'a, R, T, F, DIM>
{
const DIM: usize = DIM;
}
impl<'a, R, T: Broadcastable, F: Fn(T::Element) -> R, const DIM: usize> TensorSize
for BMap<'a, R, T, F, DIM>
{
fn size(&self) -> [usize; DIM] {
//~^ ERROR: method not compatible with trait [E0308]
self.reference.size()
//~^ ERROR: unconstrained generic constant
//~| ERROR: mismatched types
}
}
fn main() {}
|
