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Make Peekable remember peeking a None #37834

Merged
merged 1 commit into from
Nov 22, 2016
Merged

Make Peekable remember peeking a None #37834

merged 1 commit into from
Nov 22, 2016

Commits on Nov 17, 2016

  1. core::iter: Peekable should remember peeking a None 

    Peekable must remember if a None has been seen in the `.peek()` method.
It ensures that `.peek(); .peek();` or `.peek(); .next();` only advances the
underlying iterator at most once. This does not by itself make the iterator
fused.
    @bluss
    bluss committed Nov 17, 2016
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