23 lines
580 B
Rust
23 lines
580 B
Rust
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//@ known-bug: #123141
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trait ConstChunksExactTrait<T> {
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fn const_chunks_exact<const N: usize>(&self) -> ConstChunksExact<'_, T, { N }>;
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}
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impl<T> ConstChunksExactTrait<T> for [T] {}
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struct ConstChunksExact<'a, T: 'a, const N: usize> {}
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impl<'a, T, const N: usize> Iterator for ConstChunksExact<'a, T, { rem }> {
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type Item = &'a [T; N];
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}
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fn main() {
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let slice = &[1i32, 2, 3, 4, 5, 6, 7, 7, 9, 1i32];
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let mut iter = [[1, 2, 3], [4, 5, 6], [7, 8, 9]].iter();
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for a in slice.const_chunks_exact::<3>() {
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assert_eq!(a, iter.next().unwrap());
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}
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}
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