Struct TypeMap

pub struct TypeMap<A = dyn UnsafeAny>
where
    A: UnsafeAnyExt + ?Sized,
{ /* private fields */ }

Implementations

impl TypeMap

pub fn new() -> TypeMap

Create a new, empty TypeMap.

impl<A: UnsafeAnyExt + ?Sized> TypeMap<A>

pub fn custom() -> TypeMap<A>

Create a new, empty TypeMap.

Can be used with any A parameter; new is specialized to get around the required type annotations when using this function.

pub fn put<K: Key>(&mut self, val: K::Value) -> Option<K::Value>

where K::Value: Any + Implements<A>,

Insert a value into the map with a specified key type.

pub fn get<K: Key>(&self) -> &K::Value

where K::Value: Any + Implements<A>,

Gets a value from the type map.

Panics

If there is no value in the request state of the given type.

pub fn try_get<K: Key>(&self) -> Option<&K::Value>

where K::Value: Any + Implements<A>,

Attempt to get a value from the type map.

pub fn has<K: Key>(&self) -> bool

Check if a key has an associated value stored in the map.

Trait Implementations

impl<A> Debug for TypeMap<A>

where A: UnsafeAnyExt + Debug + ?Sized,

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

Formats the value using the given formatter.

impl<A> Default for TypeMap<A>

where A: UnsafeAnyExt + Default + ?Sized,

fn default() -> TypeMap<A>

Returns the “default value” for a type.