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use disjoint_impls::disjoint_impls;
disjoint_impls! {
pub trait Kita<T>
where
T: Default,
{
type GenericAssociatedType<GAT>;
fn kita<GAT>(_: Self::GenericAssociatedType<GAT>) -> &'static str;
}
impl<T: Default, R> Kita<T> for R
where
R: std::ops::Deref<Target = str>,
{
type GenericAssociatedType<GAT> = GAT;
fn kita<GAT>(_: Self::GenericAssociatedType<GAT>) -> &'static str {
"Blanket"
}
}
}
/*
pub trait Kita<T>
where
T: Default,
{
type GenericAssociatedType<GAT>;
fn kita<GAT>(_: Self::GenericAssociatedType<GAT>) -> &'static str;
}
const _: () = {
impl<T: Default, R> Kita<T> for R
where
R: std::ops::Deref<Target = str>,
{
type GenericAssociatedType<GAT> = GAT;
fn kita<GAT>(_: Self::GenericAssociatedType<GAT>) -> &'static str {
"Blanket"
}
}
};
*/
#[test]
fn single_impl() {
assert_eq!("Blanket", <String as Kita<u32>>::kita(12));
assert_eq!("Blanket", <Box<str> as Kita<String>>::kita(12));
}