Struct Extensions 

pub struct Extensions { /* private fields */ }

A type-erased map of configuration extensions.

Values are stored in an Arc so that Extensions can be cloned cheaply without requiring extensions to implement Clone.

Implementations

impl Extensions

pub fn new() -> Self

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

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

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

Removes the extension of type T, returning it as an Arc if present.

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<'_>) -> FmtResult

Formats the value using the given formatter.

impl Default for Extensions

fn default() -> Extensions

Returns the “default value” for a type.