HistoryBuffer: add HistoryBufferView, similar to VecView
#480
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replaced by #493 |
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The
viewusesiter::Chain<Slice::Iter, Slice::Iter>as the iterator. This is conceptually simpler, and would also allow exposing the other guarantees of the iterator (Reverse, TrustedLen, Fused) if we want to. This also means the iterator does not have theconst N: usizein its type.We could change
HistoryBuffer::oldest_orderedto use the same iterator, but that would be a breaking change.