pub struct Map<'a> { /* fields omitted */ }
Expand description
A map used for holding query string paramenters or headers
Construct a new empty Map
Get the number of elements in this Map
Return true
if this Map
is empty
Get the value of an element of this Map
, or None
if it doesn’t contain key
Insert a new element in this Map
Overwrites elements with the same key
, if present.
Remove an element from this Map
and return it
Return an Iterator
over this map
The elements are always sorted in alphabetical order based on the key.
Performs copy-assignment from source
. Read more
Formats the value using the given formatter. Read more
Returns the “default value” for a type. Read more
impl<T> Any for T where
T: 'static + ?Sized,
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
impl<T, U> Into<U> for T where
U: From<T>,
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
The type returned in the event of a conversion error.