Struct Extensions

pub struct Extensions { /* private fields */ }

Implementations

impl Extensions

pub fn new() -> Self

pub fn insert<T: Send + Sync + 'static>(&self, val: T) -> InsertEffect

Inserts a new value into the extension map. It will replace any existing value with the same TypeId. Note that any outstanding get/get_arc on the type will not be altered.

pub fn get<'a, T: Send + Sync + 'static>(&'a self) -> Option<&'a T>

Gets a reference to an extension value. This will invalidate that value from ever being manually removed.

pub fn get_arc<T: Send + Sync + 'static>(&self) -> Option<Arc<T>>

Gets a reference to an extension value. Since it returns an Arc and tracks it’s deallocation, it does not prevent a value from being manually removed. However, while the Arc is alive, it cannot be removed. Take care that the Arc doesn’t outlive the Request/Response, otherwise there will be a panic.

pub fn remove<T: Send + Sync + 'static>(&self) -> Option<Removed<T>>

Removes a non-invalidated entry from the Extensions map

pub fn extend(&self, other: &Extensions)

Trait Implementations

impl Clone for Extensions

fn clone(&self) -> Extensions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Extensions

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

Formats the value using the given formatter.

impl Default for Extensions

fn default() -> Extensions

Returns the “default value” for a type.

impl From<Extensions> for Extensions

fn from(value: Extensions) -> Self

Converts to this type from the input type.