Struct Extensions 

pub struct Extensions { /* private fields */ }

A type map of request extensions.

Implementations

impl Extensions

pub fn new() -> Extensions

Creates an empty Extensions map.

pub fn insert<T: 'static>(&mut self, val: T) -> Option<T>

Insert a type into this Extensions.

Returns the previous value of the same type, if present.

pub fn contains<T: 'static>(&self) -> bool

Returns true if the map contains a value of type T.

pub fn get<T: 'static>(&self) -> Option<&T>

Returns a reference to a previously inserted value of type T.

pub fn get_mut<T: 'static>(&mut self) -> Option<&mut T>

Returns a mutable reference to a previously inserted value of type T.

pub fn remove<T: 'static>(&mut self) -> Option<T>

Remove a type from this Extensions.

Returns the removed value, if present.

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

Moves all values from other into this map.

pub fn is_empty(&self) -> bool

Returns true if the map contains no values.

pub fn clear(&mut self)

Removes all values from the map.

Trait Implementations

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.