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Struct tauri::http::header::VacantEntry

x3A;:header::VacantEntry,

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

Expand description

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>[src]#

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[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 mutT[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>[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#

impl<'a, T> Debug for VacantEntry<'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

Auto Trait Implementations#

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

impl<'a, T> Send for VacantEntry<'a, T> where T: Send,#

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

impl<'a, T> Unpin for VacantEntry<'a, T>#

impl<'a, T> \!UnwindSafe for VacantEntry<'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) -> &mutT[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, U> Into<U> for T where U: From<T>,[src]#

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

Performs the conversion.

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.

impl<V, T> VZip<V> for T where V: MultiLane<T>,#

pub fn vzip(self) -> V#