src/test/ui/const-generics/const-generic-array-wrapper.rs


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// run-pass

#![feature(const_generics)]
//~^ WARN the feature `const_generics` is incomplete

struct Foo<T, const N: usize>([T; N]);

impl<T, const N: usize> Foo<T, N> {
    fn foo(&self) -> usize {
        N
    }
}

fn main() {
    let foo = Foo([0u32; 21]);
    assert_eq!(foo.0, [0u32; 21]);
    assert_eq!(foo.foo(), 21);
}