Struct tauri::http::header::OccupiedEntry
source · pub struct OccupiedEntry<'a, T> { /* private fields */ }
Expand description
A view into a single occupied location in a HeaderMap
.
This struct is returned as part of the Entry
enum.
Implementations§
source§impl<'a, T> OccupiedEntry<'a, T>
impl<'a, T> OccupiedEntry<'a, T>
sourcepub fn key(&self) -> &HeaderName
Available on crate feature http-api
only.
pub fn key(&self) -> &HeaderName
http-api
only.Returns a reference to the entry’s key.
Examples
let mut map = HeaderMap::new();
map.insert(HOST, "world".parse().unwrap());
if let Entry::Occupied(e) = map.entry("host") {
assert_eq!("host", e.key());
}
sourcepub fn get(&self) -> &T
Available on crate feature http-api
only.
pub fn get(&self) -> &T
http-api
only.Get a reference to the first value in the entry.
Values are stored in insertion order.
Panics
get
panics if there are no values associated with the entry.
Examples
let mut map = HeaderMap::new();
map.insert(HOST, "hello.world".parse().unwrap());
if let Entry::Occupied(mut e) = map.entry("host") {
assert_eq!(e.get(), &"hello.world");
e.append("hello.earth".parse().unwrap());
assert_eq!(e.get(), &"hello.world");
}
sourcepub fn get_mut(&mut self) -> &mut T
Available on crate feature http-api
only.
pub fn get_mut(&mut self) -> &mut T
http-api
only.Get a mutable reference to the first value in the entry.
Values are stored in insertion order.
Panics
get_mut
panics if there are no values associated with the entry.
Examples
let mut map = HeaderMap::default();
map.insert(HOST, "hello.world".to_string());
if let Entry::Occupied(mut e) = map.entry("host") {
e.get_mut().push_str("-2");
assert_eq!(e.get(), &"hello.world-2");
}
sourcepub fn into_mut(self) -> &'a mut T
Available on crate feature http-api
only.
pub fn into_mut(self) -> &'a mut T
http-api
only.Converts the OccupiedEntry
into a mutable reference to the first
value.
The lifetime of the returned reference is bound to the original map.
Panics
into_mut
panics if there are no values associated with the entry.
Examples
let mut map = HeaderMap::default();
map.insert(HOST, "hello.world".to_string());
map.append(HOST, "hello.earth".to_string());
if let Entry::Occupied(e) = map.entry("host") {
e.into_mut().push_str("-2");
}
assert_eq!("hello.world-2", map["host"]);
sourcepub fn insert(&mut self, value: T) -> T
Available on crate feature http-api
only.
pub fn insert(&mut self, value: T) -> T
http-api
only.Sets the value of the entry.
All previous values associated with the entry are removed and the first
one is returned. See insert_mult
for an API that returns all values.
Examples
let mut map = HeaderMap::new();
map.insert(HOST, "hello.world".parse().unwrap());
if let Entry::Occupied(mut e) = map.entry("host") {
let mut prev = e.insert("earth".parse().unwrap());
assert_eq!("hello.world", prev);
}
assert_eq!("earth", map["host"]);
sourcepub fn insert_mult(&mut self, value: T) -> ValueDrain<'_, T> ⓘ
Available on crate feature http-api
only.
pub fn insert_mult(&mut self, value: T) -> ValueDrain<'_, T> ⓘ
http-api
only.Sets the value of the entry.
This function does the same as insert
except it returns an iterator
that yields all values previously associated with the key.
Examples
let mut map = HeaderMap::new();
map.insert(HOST, "world".parse().unwrap());
map.append(HOST, "world2".parse().unwrap());
if let Entry::Occupied(mut e) = map.entry("host") {
let mut prev = e.insert_mult("earth".parse().unwrap());
assert_eq!("world", prev.next().unwrap());
assert_eq!("world2", prev.next().unwrap());
assert!(prev.next().is_none());
}
assert_eq!("earth", map["host"]);
sourcepub fn append(&mut self, value: T)
Available on crate feature http-api
only.
pub fn append(&mut self, value: T)
http-api
only.Insert the value into the entry.
The new value is appended to the end of the entry’s value list. All previous values associated with the entry are retained.
Examples
let mut map = HeaderMap::new();
map.insert(HOST, "world".parse().unwrap());
if let Entry::Occupied(mut e) = map.entry("host") {
e.append("earth".parse().unwrap());
}
let values = map.get_all("host");
let mut i = values.iter();
assert_eq!("world", *i.next().unwrap());
assert_eq!("earth", *i.next().unwrap());
sourcepub fn remove(self) -> T
Available on crate feature http-api
only.
pub fn remove(self) -> T
http-api
only.Remove the entry from the map.
All values associated with the entry are removed and the first one is
returned. See remove_entry_mult
for an API that returns all values.
Examples
let mut map = HeaderMap::new();
map.insert(HOST, "world".parse().unwrap());
if let Entry::Occupied(e) = map.entry("host") {
let mut prev = e.remove();
assert_eq!("world", prev);
}
assert!(!map.contains_key("host"));
sourcepub fn remove_entry(self) -> (HeaderName, T)
Available on crate feature http-api
only.
pub fn remove_entry(self) -> (HeaderName, T)
http-api
only.Remove the entry from the map.
The key and all values associated with the entry are removed and the
first one is returned. See remove_entry_mult
for an API that returns
all values.
Examples
let mut map = HeaderMap::new();
map.insert(HOST, "world".parse().unwrap());
if let Entry::Occupied(e) = map.entry("host") {
let (key, mut prev) = e.remove_entry();
assert_eq!("host", key.as_str());
assert_eq!("world", prev);
}
assert!(!map.contains_key("host"));
sourcepub fn remove_entry_mult(self) -> (HeaderName, ValueDrain<'a, T>)
Available on crate feature http-api
only.
pub fn remove_entry_mult(self) -> (HeaderName, ValueDrain<'a, T>)
http-api
only.Remove the entry from the map.
The key and all values associated with the entry are removed and returned.
sourcepub fn iter(&self) -> ValueIter<'_, T> ⓘ
Available on crate feature http-api
only.
pub fn iter(&self) -> ValueIter<'_, T> ⓘ
http-api
only.Returns an iterator visiting all values associated with the entry.
Values are iterated in insertion order.
Examples
let mut map = HeaderMap::new();
map.insert(HOST, "world".parse().unwrap());
map.append(HOST, "earth".parse().unwrap());
if let Entry::Occupied(e) = map.entry("host") {
let mut iter = e.iter();
assert_eq!(&"world", iter.next().unwrap());
assert_eq!(&"earth", iter.next().unwrap());
assert!(iter.next().is_none());
}
sourcepub fn iter_mut(&mut self) -> ValueIterMut<'_, T> ⓘ
Available on crate feature http-api
only.
pub fn iter_mut(&mut self) -> ValueIterMut<'_, T> ⓘ
http-api
only.Returns an iterator mutably visiting all values associated with the entry.
Values are iterated in insertion order.
Examples
let mut map = HeaderMap::default();
map.insert(HOST, "world".to_string());
map.append(HOST, "earth".to_string());
if let Entry::Occupied(mut e) = map.entry("host") {
for e in e.iter_mut() {
e.push_str("-boop");
}
}
let mut values = map.get_all("host");
let mut i = values.iter();
assert_eq!(&"world-boop", i.next().unwrap());
assert_eq!(&"earth-boop", i.next().unwrap());