# Struct hyper::header::Values [−] [src]

    pub struct Values<'a, T> { /* fields omitted */ }

`HeaderMap` value iterator.

Each value contained in the `HeaderMap` will be yielded.

## Trait Implementations

### `impl<'a, T> Debug for Values<'a, T> where
T: Debug,` [src]

#### `pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>` [src]

Formats the value using the given formatter. Read more

### `impl<'a, T> FusedIterator for Values<'a, T>` [src]

### `impl<'a, T> Iterator for Values<'a, T>` [src]

#### `type Item = &'a T`

The type of the elements being iterated over.

#### `pub fn next(&mut self) -> Option<<Values<'a, T> as Iterator>::Item>` [src]

Advances the iterator and returns the next value. Read more

#### `pub fn size_hint(&self) -> (usize, Option<usize>)` [src]

Returns the bounds on the remaining length of the iterator. Read more

#### `pub fn count(self) -> usize` 1.0.0 [src]

Consumes the iterator, counting the number of iterations and returning it. Read more

#### `pub fn last(self) -> Option<Self::Item>`1.0.0 [src]

Consumes the iterator, returning the last element. Read more

#### `pub fn advance_by(&mut self, n: usize) -> Result<(), usize>` [src]

🔬 This is a nightly-only experimental API. (`iter_advance_by`)

recently added

Advances the iterator by `n` elements. Read more

#### `pub fn nth(&mut self, n: usize) -> Option<Self::Item>`1.0.0 [src]

Returns the `n`th element of the iterator. Read more

#### `pub fn step_by(self, step: usize) -> StepBy<Self>`1.28.0 [src]

Creates an iterator starting at the same point, but stepping by the given amount at each iteration. Read more

#### `pub fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter> where
U: IntoIterator<Item = Self::Item>,` 1.0.0 [src]

Takes two iterators and creates a new iterator over both in sequence. Read more

#### `pub fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter> where
U: IntoIterator,` 1.0.0 [src]

‘Zips up’ two iterators into a single iterator of pairs. Read more

#### `pub fn intersperse(self, separator: Self::Item) -> Intersperse<Self> where
Self::Item: Clone,` [src]

🔬 This is a nightly-only experimental API. (`iter_intersperse`)

recently added

Creates a new iterator which places a copy of `separator` between adjacent items of the original iterator. Read more

#### `pub fn intersperse_with<G>(self, separator: G) -> IntersperseWith<Self, G> where
G: FnMut() -> Self::Item,` [src]

🔬 This is a nightly-only experimental API. (`iter_intersperse`)

recently added

Creates a new iterator which places an item generated by `separator` between adjacent items of the original iterator. Read more

#### `pub fn map<B, F>(self, f: F) -> Map<Self, F> where
F: FnMut(Self::Item) -> B,` 1.0.0 [src]

Takes a closure and creates an iterator which calls that closure on each element. Read more

#### `pub fn for_each<F>(self, f: F) where
F: FnMut(Self::Item),` 1.21.0 [src]

Calls a closure on each element of an iterator. Read more

#### `pub fn filter<P>(self, predicate: P) -> Filter<Self, P> where
P: FnMut(&Self::Item) -> bool,` 1.0.0 [src]

Creates an iterator which uses a closure to determine if an element should be yielded. Read more

#### `pub fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F> where
F: FnMut(Self::Item) -> Option<B>,` 1.0.0 [src]

Creates an iterator that both filters and maps. Read more

#### `pub fn enumerate(self) -> Enumerate<Self>`1.0.0 [src]

Creates an iterator which gives the current iteration count as well as the next value. Read more

#### `pub fn peekable(self) -> Peekable<Self>`1.0.0 [src]

Creates an iterator which can use `peek` to look at the next element of the iterator without consuming it. Read more

#### `pub fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where
P: FnMut(&Self::Item) -> bool,` 1.0.0 [src]

Creates an iterator that `skip`s elements based on a predicate. Read more

#### `pub fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where
P: FnMut(&Self::Item) -> bool,` 1.0.0 [src]

Creates an iterator that yields elements based on a predicate. Read more

#### `pub fn map_while<B, P>(self, predicate: P) -> MapWhile<Self, P> where
P: FnMut(Self::Item) -> Option<B>,` [src]

🔬 This is a nightly-only experimental API. (`iter_map_while`)

recently added

Creates an iterator that both yields elements based on a predicate and maps. Read more

#### `pub fn skip(self, n: usize) -> Skip<Self>`1.0.0 [src]

Creates an iterator that skips the first `n` elements. Read more

#### `pub fn take(self, n: usize) -> Take<Self>`1.0.0 [src]

Creates an iterator that yields its first `n` elements. Read more

#### `pub fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where
F: FnMut(&mut St, Self::Item) -> Option<B>,` 1.0.0 [src]

An iterator adaptor similar to `fold` that holds internal state and produces a new iterator. Read more

#### `pub fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
F: FnMut(Self::Item) -> U,
U: IntoIterator,` 1.0.0 [src]

Creates an iterator that works like map, but flattens nested structure. Read more

#### `pub fn flatten(self) -> Flatten<Self> where
Self::Item: IntoIterator,` 1.29.0 [src]

Creates an iterator that flattens nested structure. Read more

#### `pub fn fuse(self) -> Fuse<Self>`1.0.0 [src]

Creates an iterator which ends after the first `None`. Read more

#### `pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnMut(&Self::Item),` 1.0.0 [src]

Does something with each element of an iterator, passing the value on. Read more

#### `pub fn by_ref(&mut self) -> &mut Self` 1.0.0 [src]

Borrows an iterator, rather than consuming it. Read more

#### `#[must_use = "if you really need to exhaust the iterator, consider `.for_each(drop)` instead"]pub fn collect<B>(self) -> B where
B: FromIterator<Self::Item>,` 1.0.0 [src]

Transforms an iterator into a collection. Read more

#### `pub fn partition<B, F>(self, f: F) -> (B, B) where
F: FnMut(&Self::Item) -> bool,
B: Default + Extend<Self::Item>,` 1.0.0 [src]

Consumes an iterator, creating two collections from it. Read more

#### `pub fn partition_in_place<'a, T, P>(self, predicate: P) -> usize where
Self: DoubleEndedIterator<Item = &'a mut T>,
T: 'a,
P: FnMut(&T) -> bool,` [src]

🔬 This is a nightly-only experimental API. (`iter_partition_in_place`)

new API

Reorders the elements of this iterator in-place according to the given predicate, such that all those that return `true` precede all those that return `false`. Returns the number of `true` elements found. Read more

#### `pub fn is_partitioned<P>(self, predicate: P) -> bool where
P: FnMut(Self::Item) -> bool,` [src]

🔬 This is a nightly-only experimental API. (`iter_is_partitioned`)

new API

Checks if the elements of this iterator are partitioned according to the given predicate, such that all those that return `true` precede all those that return `false`. Read more

#### `pub fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R where
F: FnMut(B, Self::Item) -> R,
R: Try<Ok = B>,` 1.27.0 [src]

An iterator method that applies a function as long as it returns successfully, producing a single, final value. Read more

#### `pub fn try_for_each<F, R>(&mut self, f: F) -> R where
F: FnMut(Self::Item) -> R,
R: Try<Ok = ()>,` 1.27.0 [src]

An iterator method that applies a fallible function to each item in the iterator, stopping at the first error and returning that error. Read more

#### `pub fn fold<B, F>(self, init: B, f: F) -> B where
F: FnMut(B, Self::Item) -> B,` 1.0.0 [src]

Folds every element into an accumulator by applying an operation, returning the final result. Read more

#### `pub fn reduce<F>(self, f: F) -> Option<Self::Item> where
F: FnMut(Self::Item, Self::Item) -> Self::Item,` 1.51.0 [src]

Reduces the elements to a single one, by repeatedly applying a reducing operation. Read more

#### `pub fn all<F>(&mut self, f: F) -> bool where
F: FnMut(Self::Item) -> bool,` 1.0.0 [src]

Tests if every element of the iterator matches a predicate. Read more

#### `pub fn any<F>(&mut self, f: F) -> bool where
F: FnMut(Self::Item) -> bool,` 1.0.0 [src]

Tests if any element of the iterator matches a predicate. Read more

#### `pub fn find<P>(&mut self, predicate: P) -> Option<Self::Item> where
P: FnMut(&Self::Item) -> bool,` 1.0.0 [src]

Searches for an element of an iterator that satisfies a predicate. Read more

#### `pub fn find_map<B, F>(&mut self, f: F) -> Option<B> where
F: FnMut(Self::Item) -> Option<B>,` 1.30.0 [src]

Applies function to the elements of iterator and returns the first non-none result. Read more

#### `pub fn try_find<F, R>(
&mut self,
f: F
) -> Result<Option<Self::Item>, <R as Try>::Error> where
F: FnMut(&Self::Item) -> R,
R: Try<Ok = bool>,` [src]

🔬 This is a nightly-only experimental API. (`try_find`)

new API

Applies function to the elements of iterator and returns the first true result or the first error. Read more

#### `pub fn position<P>(&mut self, predicate: P) -> Option<usize> where
P: FnMut(Self::Item) -> bool,` 1.0.0 [src]

Searches for an element in an iterator, returning its index. Read more

#### `pub fn rposition<P>(&mut self, predicate: P) -> Option<usize> where
Self: ExactSizeIterator + DoubleEndedIterator,
P: FnMut(Self::Item) -> bool,` 1.0.0 [src]

Searches for an element in an iterator from the right, returning its index. Read more

#### `pub fn max(self) -> Option<Self::Item> where
Self::Item: Ord,` 1.0.0 [src]

Returns the maximum element of an iterator. Read more

#### `pub fn min(self) -> Option<Self::Item> where
Self::Item: Ord,` 1.0.0 [src]

Returns the minimum element of an iterator. Read more

#### `pub fn max_by_key<B, F>(self, f: F) -> Option<Self::Item> where
F: FnMut(&Self::Item) -> B,
B: Ord,` 1.6.0 [src]

Returns the element that gives the maximum value from the specified function. Read more

#### `pub fn max_by<F>(self, compare: F) -> Option<Self::Item> where
F: FnMut(&Self::Item, &Self::Item) -> Ordering,` 1.15.0 [src]

Returns the element that gives the maximum value with respect to the specified comparison function. Read more

#### `pub fn min_by_key<B, F>(self, f: F) -> Option<Self::Item> where
F: FnMut(&Self::Item) -> B,
B: Ord,` 1.6.0 [src]

Returns the element that gives the minimum value from the specified function. Read more

#### `pub fn min_by<F>(self, compare: F) -> Option<Self::Item> where
F: FnMut(&Self::Item, &Self::Item) -> Ordering,` 1.15.0 [src]

Returns the element that gives the minimum value with respect to the specified comparison function. Read more

#### `pub fn rev(self) -> Rev<Self> where
Self: DoubleEndedIterator,` 1.0.0 [src]

Reverses an iterator’s direction. Read more

#### `pub fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where
Self: Iterator<Item = (A, B)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,` 1.0.0 [src]

Converts an iterator of pairs into a pair of containers. Read more

#### `pub fn copied<'a, T>(self) -> Copied<Self> where
Self: Iterator<Item = &'a T>,
T: 'a + Copy,` 1.36.0 [src]

Creates an iterator which copies all of its elements. Read more

#### `pub fn cloned<'a, T>(self) -> Cloned<Self> where
Self: Iterator<Item = &'a T>,
T: 'a + Clone,` 1.0.0 [src]

Creates an iterator which `clone`s all of its elements. Read more

#### `pub fn cycle(self) -> Cycle<Self> where
Self: Clone,` 1.0.0 [src]

Repeats an iterator endlessly. Read more

#### `pub fn sum<S>(self) -> S where
S: Sum<Self::Item>,` 1.11.0 [src]

Sums the elements of an iterator. Read more

#### `pub fn product<P>(self) -> P where
P: Product<Self::Item>,` 1.11.0 [src]

Iterates over the entire iterator, multiplying all the elements Read more

#### `pub fn cmp<I>(self, other: I) -> Ordering where
I: IntoIterator<Item = Self::Item>,
Self::Item: Ord,` 1.5.0 [src]

Lexicographically compares the elements of this `Iterator` with those of another. Read more

#### `pub fn cmp_by<I, F>(self, other: I, cmp: F) -> Ordering where
F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Ordering,
I: IntoIterator,` [src]

🔬 This is a nightly-only experimental API. (`iter_order_by`)

Lexicographically compares the elements of this `Iterator` with those of another with respect to the specified comparison function. Read more

#### `pub fn partial_cmp<I>(self, other: I) -> Option<Ordering> where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,` 1.5.0 [src]

Lexicographically compares the elements of this `Iterator` with those of another. Read more

#### `pub fn partial_cmp_by<I, F>(self, other: I, partial_cmp: F) -> Option<Ordering> where
F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Option<Ordering>,
I: IntoIterator,` [src]

🔬 This is a nightly-only experimental API. (`iter_order_by`)

Lexicographically compares the elements of this `Iterator` with those of another with respect to the specified comparison function. Read more

#### `pub fn eq<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,` 1.5.0 [src]

Determines if the elements of this `Iterator` are equal to those of another. Read more

#### `pub fn eq_by<I, F>(self, other: I, eq: F) -> bool where
F: FnMut(Self::Item, <I as IntoIterator>::Item) -> bool,
I: IntoIterator,` [src]

🔬 This is a nightly-only experimental API. (`iter_order_by`)

Determines if the elements of this `Iterator` are equal to those of another with respect to the specified equality function. Read more

#### `pub fn ne<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,` 1.5.0 [src]

Determines if the elements of this `Iterator` are unequal to those of another. Read more

#### `pub fn lt<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,` 1.5.0 [src]

Determines if the elements of this `Iterator` are lexicographically less than those of another. Read more

#### `pub fn le<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,` 1.5.0 [src]

Determines if the elements of this `Iterator` are lexicographically less or equal to those of another. Read more

#### `pub fn gt<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,` 1.5.0 [src]

Determines if the elements of this `Iterator` are lexicographically greater than those of another. Read more

#### `pub fn ge<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,` 1.5.0 [src]

Determines if the elements of this `Iterator` are lexicographically greater than or equal to those of another. Read more

#### `pub fn is_sorted(self) -> bool where
Self::Item: PartialOrd<Self::Item>,` [src]

🔬 This is a nightly-only experimental API. (`is_sorted`)

new API

Checks if the elements of this iterator are sorted. Read more

#### `pub fn is_sorted_by<F>(self, compare: F) -> bool where
F: FnMut(&Self::Item, &Self::Item) -> Option<Ordering>,` [src]

🔬 This is a nightly-only experimental API. (`is_sorted`)

new API

Checks if the elements of this iterator are sorted using the given comparator function. Read more

#### `pub fn is_sorted_by_key<F, K>(self, f: F) -> bool where
F: FnMut(Self::Item) -> K,
K: PartialOrd<K>,` [src]

🔬 This is a nightly-only experimental API. (`is_sorted`)

new API

Checks if the elements of this iterator are sorted using the given key extraction function. Read more

## Auto Trait Implementations

### `impl<'a, T> RefUnwindSafe for Values<'a, T> where
T: RefUnwindSafe,`

### `impl<'a, T> Send for Values<'a, T> where
T: Sync,`

### `impl<'a, T> Sync for Values<'a, T> where
T: Sync,`

### `impl<'a, T> Unpin for Values<'a, T>`

### `impl<'a, T> !UnwindSafe for Values<'a, T>`

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `pub fn type_id(&self) -> TypeId` [src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T` [src]

#### `pub fn from(t: T) -> T` [src]

Performs the conversion.

### `impl<T> Instrument for T` [src]

#### `pub fn instrument(self, span: Span) -> Instrumented<Self>` [src]

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more

#### `pub fn in_current_span(self) -> Instrumented<Self>` [src]

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `pub fn into(self) -> U` [src]

Performs the conversion.

### `impl<I> IntoIterator for I where
I: Iterator,` [src]

#### `type Item = <I as Iterator>::Item`

The type of the elements being iterated over.

#### `type IntoIter = I`

Which kind of iterator are we turning this into?

#### `pub fn into_iter(self) -> I` [src]

Creates an iterator from a value. Read more

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>` [src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>` [src]

Performs the conversion.