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Implement O(1) slice::Iter{,Mut} methods. #24701

Merged
merged 3 commits into from
Apr 28, 2015
Merged

Implement O(1) slice::Iter{,Mut} methods. #24701

merged 3 commits into from
Apr 28, 2015

Commits on Apr 22, 2015

  1. Implement O(1) slice::Iter methods. 

    Instead of using the O(n) defaults, define O(1) shortcuts.
    @Stebalien
    Stebalien committed Apr 22, 2015
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  2. Address comments. 

    1. Use next_back for last.
2. Use slices for computing nth. It might be possible to use the same
code for both the mut/const case but I don't know how that will play
with compiler optimizations.
    @Stebalien
    Stebalien committed Apr 22, 2015
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Commits on Apr 24, 2015

  1. Deduplicate slice iter offset/transmute code.

    @Stebalien
    Stebalien committed Apr 24, 2015
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