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Optimize iterator adapters. #25035

Merged
merged 1 commit into from
May 6, 2015
Merged

Optimize iterator adapters. #25035

merged 1 commit into from
May 6, 2015
+360 −18

Commits on May 5, 2015

  1. Optimize iterator adapters. 

    Specifically, make count, nth, and last call the corresponding methods
on the underlying iterator where possible. This way, if the underlying
iterator has an optimized count, nth, or last implementations (e.g.
slice::Iter), these methods will propagate these optimizations.

Additionally, change Skip::next to take advantage of a potentially
optimized nth method on the underlying iterator.
    @Stebalien
    Stebalien committed May 5, 2015
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