Struct CtxMap

pub struct CtxMap { /* private fields */ }

A map that holds at most one value of any type.

This is similar to the type provided by the anymap crate, but we can get away with simpler types on the methods due to our more specialized use case.

Implementations

impl CtxMap

pub fn clear(&mut self)

pub fn contains<T: Any>(&self) -> bool

pub fn try_get<T: Any>(&self) -> Option<Result<Ref<'_, T>, BorrowError>>

pub fn try_get_mut<T: Any>( &self, ) -> Option<Result<RefMut<'_, T>, BorrowMutError>>

pub fn insert<T: Any>(&mut self, x: T) -> Option<T>

pub fn remove<T: Any>(&mut self) -> Option<T>

pub fn new() -> Self

Trait Implementations

impl Default for CtxMap

fn default() -> CtxMap

Returns the “default value” for a type.