impl IntoIterator for HashMap
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1 changed files with 37 additions and 1 deletions
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@ -20,7 +20,7 @@ use cmp::{max, Eq, PartialEq};
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use default::Default;
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use fmt::{self, Debug};
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use hash::{self, Hash, SipHasher};
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use iter::{self, Iterator, ExactSizeIterator, IteratorExt, FromIterator, Extend, Map};
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use iter::{self, Iterator, ExactSizeIterator, IntoIterator, IteratorExt, FromIterator, Extend, Map};
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use marker::Sized;
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use mem::{self, replace};
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use num::{Int, UnsignedInt};
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@ -1385,6 +1385,42 @@ enum VacantEntryState<K, V, M> {
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NoElem(EmptyBucket<K, V, M>),
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}
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impl<'a, K, V, S, H> IntoIterator for &'a HashMap<K, V, S>
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where K: Eq + Hash<H>,
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S: HashState<Hasher=H>,
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H: hash::Hasher<Output=u64>
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{
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type Iter = Iter<'a, K, V>;
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fn into_iter(self) -> Iter<'a, K, V> {
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self.iter()
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}
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}
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impl<'a, K, V, S, H> IntoIterator for &'a mut HashMap<K, V, S>
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where K: Eq + Hash<H>,
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S: HashState<Hasher=H>,
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H: hash::Hasher<Output=u64>
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{
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type Iter = IterMut<'a, K, V>;
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fn into_iter(mut self) -> IterMut<'a, K, V> {
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self.iter_mut()
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}
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}
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impl<K, V, S, H> IntoIterator for HashMap<K, V, S>
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where K: Eq + Hash<H>,
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S: HashState<Hasher=H>,
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H: hash::Hasher<Output=u64>
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{
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type Iter = IntoIter<K, V>;
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fn into_iter(mut self) -> IntoIter<K, V> {
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self.into_iter()
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}
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}
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#[stable(feature = "rust1", since = "1.0.0")]
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impl<'a, K, V> Iterator for Iter<'a, K, V> {
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type Item = (&'a K, &'a V);
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