Struct melib::email::headers::HeaderMap

pub struct HeaderMap(IndexMap<HeaderName, String>);

Implementations

impl HeaderMap

pub fn get_mut(&mut self, key: &str) -> Option<&mut String>

pub fn get(&self, key: &str) -> Option<&String>

pub fn contains_key(&self, key: &str) -> bool

pub fn remove(&mut self, key: &str) -> Option<String>

Methods from Deref<Target = IndexMap<HeaderName, String>>

pub fn capacity(&self) -> usize

Computes in O(1) time.

pub fn hasher(&self) -> &S

Return a reference to the map's BuildHasher.

pub fn len(&self) -> usize

Return the number of key-value pairs in the map.

Computes in O(1) time.

pub fn is_empty(&self) -> bool

Returns true if the map contains no elements.

Computes in O(1) time.

pub fn iter(&self) -> Iter<'_, K, V>

Return an iterator over the key-value pairs of the map, in their order

pub fn iter_mut(&mut self) -> IterMut<'_, K, V>

Return an iterator over the key-value pairs of the map, in their order

pub fn keys(&self) -> Keys<'_, K, V>

Return an iterator over the keys of the map, in their order

pub fn values(&self) -> Values<'_, K, V>

Return an iterator over the values of the map, in their order

pub fn values_mut(&mut self) -> ValuesMut<'_, K, V>

Return an iterator over mutable references to the the values of the map, in their order

pub fn clear(&mut self)

Remove all key-value pairs in the map, while preserving its capacity.

Computes in O(n) time.

pub fn drain<R>(&mut self, range: R) -> Drain<'_, K, V> where
    R: RangeBounds<usize>, 

Clears the IndexMap in the given index range, returning those key-value pairs as a drain iterator.

The range may be any type that implements RangeBounds<usize>, including all of the std::ops::Range* types, or even a tuple pair of Bound start and end values. To drain the map entirely, use RangeFull like map.drain(..).

This shifts down all entries following the drained range to fill the gap, and keeps the allocated memory for reuse.

Panics if the starting point is greater than the end point or if the end point is greater than the length of the map.

pub fn reserve(&mut self, additional: usize)

Reserve capacity for additional more key-value pairs.

Computes in O(n) time.

pub fn shrink_to_fit(&mut self)

Shrink the capacity of the map as much as possible.

Computes in O(n) time.

pub fn insert(&mut self, key: K, value: V) -> Option<V>

Insert a key-value pair in the map.

If an equivalent key already exists in the map: the key remains and retains in its place in the order, its corresponding value is updated with value and the older value is returned inside Some(_).

If no equivalent key existed in the map: the new key-value pair is inserted, last in order, and None is returned.

Computes in O(1) time (amortized average).

See also entry if you you want to insert or modify or if you need to get the index of the corresponding key-value pair.

pub fn insert_full(&mut self, key: K, value: V) -> (usize, Option<V>)

Insert a key-value pair in the map, and get their index.

If an equivalent key already exists in the map: the key remains and retains in its place in the order, its corresponding value is updated with value and the older value is returned inside (index, Some(_)).

If no equivalent key existed in the map: the new key-value pair is inserted, last in order, and (index, None) is returned.

Computes in O(1) time (amortized average).

See also entry if you you want to insert or modify or if you need to get the index of the corresponding key-value pair.

pub fn entry(&mut self, key: K) -> Entry<'_, K, V>

Get the given key’s corresponding entry in the map for insertion and/or in-place manipulation.

Computes in O(1) time (amortized average).

pub fn contains_key<Q>(&self, key: &Q) -> bool where
    Q: Hash + Equivalent<K> + ?Sized, 

Return true if an equivalent to key exists in the map.

Computes in O(1) time (average).

pub fn get<Q>(&self, key: &Q) -> Option<&V> where
    Q: Hash + Equivalent<K> + ?Sized, 

Return a reference to the value stored for key, if it is present, else None.

Computes in O(1) time (average).

pub fn get_key_value<Q>(&self, key: &Q) -> Option<(&K, &V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

Return references to the key-value pair stored for key, if it is present, else None.

Computes in O(1) time (average).

pub fn get_full<Q>(&self, key: &Q) -> Option<(usize, &K, &V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

Return item index, key and value

pub fn get_index_of<Q>(&self, key: &Q) -> Option<usize> where
    Q: Hash + Equivalent<K> + ?Sized, 

Return item index, if it exists in the map

pub fn get_mut<Q>(&mut self, key: &Q) -> Option<&mut V> where
    Q: Hash + Equivalent<K> + ?Sized, 

pub fn get_full_mut<Q>(&mut self, key: &Q) -> Option<(usize, &K, &mut V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

pub fn remove<Q>(&mut self, key: &Q) -> Option<V> where
    Q: Hash + Equivalent<K> + ?Sized, 

Remove the key-value pair equivalent to key and return its value.

NOTE: This is equivalent to .swap_remove(key), if you need to preserve the order of the keys in the map, use .shift_remove(key) instead.

Computes in O(1) time (average).

pub fn remove_entry<Q>(&mut self, key: &Q) -> Option<(K, V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

Remove and return the key-value pair equivalent to key.

NOTE: This is equivalent to .swap_remove_entry(key), if you need to preserve the order of the keys in the map, use .shift_remove_entry(key) instead.

Computes in O(1) time (average).

pub fn swap_remove<Q>(&mut self, key: &Q) -> Option<V> where
    Q: Hash + Equivalent<K> + ?Sized, 

Remove the key-value pair equivalent to key and return its value.

Like Vec::swap_remove, the pair is removed by swapping it with the last element of the map and popping it off. This perturbs the postion of what used to be the last element!

Return None if key is not in map.

Computes in O(1) time (average).

pub fn swap_remove_entry<Q>(&mut self, key: &Q) -> Option<(K, V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

Remove and return the key-value pair equivalent to key.

Like Vec::swap_remove, the pair is removed by swapping it with the last element of the map and popping it off. This perturbs the postion of what used to be the last element!

Return None if key is not in map.

Computes in O(1) time (average).

pub fn swap_remove_full<Q>(&mut self, key: &Q) -> Option<(usize, K, V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

Remove the key-value pair equivalent to key and return it and the index it had.

Like Vec::swap_remove, the pair is removed by swapping it with the last element of the map and popping it off. This perturbs the postion of what used to be the last element!

Return None if key is not in map.

Computes in O(1) time (average).

pub fn shift_remove<Q>(&mut self, key: &Q) -> Option<V> where
    Q: Hash + Equivalent<K> + ?Sized, 

Remove the key-value pair equivalent to key and return its value.

Like Vec::remove, the pair is removed by shifting all of the elements that follow it, preserving their relative order. This perturbs the index of all of those elements!

Return None if key is not in map.

Computes in O(n) time (average).

pub fn shift_remove_entry<Q>(&mut self, key: &Q) -> Option<(K, V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

Remove and return the key-value pair equivalent to key.

Like Vec::remove, the pair is removed by shifting all of the elements that follow it, preserving their relative order. This perturbs the index of all of those elements!

Return None if key is not in map.

Computes in O(n) time (average).

pub fn shift_remove_full<Q>(&mut self, key: &Q) -> Option<(usize, K, V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

Remove the key-value pair equivalent to key and return it and the index it had.

Like Vec::remove, the pair is removed by shifting all of the elements that follow it, preserving their relative order. This perturbs the index of all of those elements!

Return None if key is not in map.

Computes in O(n) time (average).

pub fn pop(&mut self) -> Option<(K, V)>

Remove the last key-value pair

Computes in O(1) time (average).

pub fn retain<F>(&mut self, keep: F) where
    F: FnMut(&K, &mut V) -> bool, 

Scan through each key-value pair in the map and keep those where the closure keep returns true.

The elements are visited in order, and remaining elements keep their order.

Computes in O(n) time (average).

pub fn sort_keys(&mut self) where
    K: Ord, 

Sort the map’s key-value pairs by the default ordering of the keys.

See sort_by for details.

pub fn sort_by<F>(&mut self, cmp: F) where
    F: FnMut(&K, &V, &K, &V) -> Ordering, 

Sort the map’s key-value pairs in place using the comparison function compare.

The comparison function receives two key and value pairs to compare (you can sort by keys or values or their combination as needed).

Computes in O(n log n + c) time and O(n) space where n is the length of the map and c the capacity. The sort is stable.

pub fn reverse(&mut self)

Reverses the order of the map’s key-value pairs in place.

Computes in O(n) time and O(1) space.

pub fn get_index(&self, index: usize) -> Option<(&K, &V)>

Get a key-value pair by index

Valid indices are 0 <= index < self.len()

Computes in O(1) time.

pub fn get_index_mut(&mut self, index: usize) -> Option<(&mut K, &mut V)>

Get a key-value pair by index

Valid indices are 0 <= index < self.len()

Computes in O(1) time.

pub fn swap_remove_index(&mut self, index: usize) -> Option<(K, V)>

Remove the key-value pair by index

Valid indices are 0 <= index < self.len()

Like Vec::swap_remove, the pair is removed by swapping it with the last element of the map and popping it off. This perturbs the postion of what used to be the last element!

Computes in O(1) time (average).

pub fn shift_remove_index(&mut self, index: usize) -> Option<(K, V)>

Remove the key-value pair by index

Valid indices are 0 <= index < self.len()

Like Vec::remove, the pair is removed by shifting all of the elements that follow it, preserving their relative order. This perturbs the index of all of those elements!

Computes in O(n) time (average).

Trait Implementations

impl Clone for HeaderMap

fn clone(&self) -> HeaderMap

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HeaderMap

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for HeaderMap

fn default() -> HeaderMap

Returns the "default value" for a type.

impl Deref for HeaderMap

type Target = IndexMap<HeaderName, String>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl DerefMut for HeaderMap

fn deref_mut(&mut self) -> &mut IndexMap<HeaderName, String>

Mutably dereferences the value.

impl<'de> Deserialize<'de> for HeaderMap

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Eq for HeaderMap

impl<'_> Index<&'_ [u8]> for HeaderMap

type Output = str

The returned type after indexing.

fn index(&self, k: &[u8]) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<'_> Index<&'_ str> for HeaderMap

type Output = str

The returned type after indexing.

fn index(&self, k: &str) -> &Self::Output

Performs the indexing (container[index]) operation.

impl PartialEq<HeaderMap> for HeaderMap

fn eq(&self, other: &HeaderMap) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &HeaderMap) -> bool

This method tests for !=.

impl Serialize for HeaderMap

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl StructuralEq for HeaderMap

impl StructuralPartialEq for HeaderMap