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Implement size_hint
for more iterators.
``` implement size hint for more iterators because why not we like fast things ```
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8 changed files with 36 additions and 0 deletions
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@ -440,4 +440,12 @@ impl<I, J, K, T> Iterator for Choice3<I, J, K>
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Choice3::Third(ref mut k) => k.next(),
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}
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}
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fn size_hint(&self) -> (usize, Option<usize>) {
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match *self {
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Choice3::First(ref i) => i.size_hint(),
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Choice3::Second(ref j) => j.size_hint(),
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Choice3::Third(ref k) => k.size_hint(),
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}
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}
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}
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@ -487,6 +487,10 @@ impl<I> Iterator for FragmentParsingResult<I>
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next.remove_self();
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Some(next)
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}
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fn size_hint(&self) -> (usize, Option<usize>) {
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self.inner.size_hint()
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}
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}
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#[derive(HeapSizeOf, JSTraceable, PartialEq)]
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