Struct choices::warp::http::header::VacantEntry [−][src]
pub struct VacantEntry<'a, T> { /* fields omitted */ }
A view into a single empty location in a HeaderMap
.
This struct is returned as part of the Entry
enum.
Implementations
impl<'a, T> VacantEntry<'a, T>
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impl<'a, T> VacantEntry<'a, T>
[src]pub fn key(&self) -> &HeaderName
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pub fn key(&self) -> &HeaderName
[src]Returns a reference to the entry’s key
Examples
let mut map = HeaderMap::new(); assert_eq!(map.entry("x-hello").key().as_str(), "x-hello");
pub fn into_key(self) -> HeaderName
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pub fn into_key(self) -> HeaderName
[src]Take ownership of the key
Examples
let mut map = HeaderMap::new(); if let Entry::Vacant(v) = map.entry("x-hello") { assert_eq!(v.into_key().as_str(), "x-hello"); }
pub fn insert(self, value: T) -> &'a mut Tⓘ
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pub fn insert(self, value: T) -> &'a mut Tⓘ
[src]Insert the value into the entry.
The value will be associated with this entry’s key. A mutable reference to the inserted value will be returned.
Examples
let mut map = HeaderMap::new(); if let Entry::Vacant(v) = map.entry("x-hello") { v.insert("world".parse().unwrap()); } assert_eq!(map["x-hello"], "world");
pub fn insert_entry(self, value: T) -> OccupiedEntry<'a, T>
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pub fn insert_entry(self, value: T) -> OccupiedEntry<'a, T>
[src]Insert the value into the entry.
The value will be associated with this entry’s key. The new
OccupiedEntry
is returned, allowing for further manipulation.
Examples
let mut map = HeaderMap::new(); if let Entry::Vacant(v) = map.entry("x-hello") { let mut e = v.insert_entry("world".parse().unwrap()); e.insert("world2".parse().unwrap()); } assert_eq!(map["x-hello"], "world2");
Trait Implementations
Auto Trait Implementations
impl<'a, T> RefUnwindSafe for VacantEntry<'a, T> where
T: RefUnwindSafe,
T: RefUnwindSafe,
impl<'a, T> Send for VacantEntry<'a, T> where
T: Send,
T: Send,
impl<'a, T> Sync for VacantEntry<'a, T> where
T: Sync,
T: Sync,
impl<'a, T> Unpin for VacantEntry<'a, T>
impl<'a, T> !UnwindSafe for VacantEntry<'a, T>
Blanket Implementations
impl<T> Instrument for T
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impl<T> Instrument for T
[src]fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
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fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
[src]Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
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fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
[src]impl<T> Instrument for T
[src]
impl<T> Instrument for T
[src]fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
[src]
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
[src]Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
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fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
[src]impl<T> Same<T> for T
impl<T> Same<T> for T
type Output = T
type Output = T
Should always be Self
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,