33 lines
445 B
Rust
33 lines
445 B
Rust
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//@ check-pass
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trait Data {
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type Elem;
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}
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impl<F, S: Data<Elem = F>> Data for ArrayBase<S> {
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type Elem = F;
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}
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struct DatasetIter<'a, R: Data> {
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data: &'a R::Elem,
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}
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pub struct ArrayBase<S> {
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data: S,
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}
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trait Trait {
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type Item;
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fn next() -> Option<Self::Item>;
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}
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impl<'a, D: Data> Trait for DatasetIter<'a, ArrayBase<D>> {
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type Item = ();
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fn next() -> Option<Self::Item> {
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None
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}
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}
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fn main() {}
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