Struct ttmap::TypeMap

pub struct TypeMap { /* private fields */ }

Type-safe store, indexed by types.

Implementations

impl TypeMap

pub fn new() -> Self

Creates new instance

pub fn len(&self) -> usize

Returns number of key & value pairs inside.

pub fn capacity(&self) -> usize

Returns number of key & value pairs inside.

pub fn is_empty(&self) -> bool

Returns whether map is empty

pub fn clear(&mut self)

Removes all pairs of key & value from the map.

pub fn has<T: Type>(&self) -> bool

Returns whether element is present in the map.

pub fn contains_key<T: Type>(&self) -> bool

Returns whether element is present in the map.

pub fn get<T: Type>(&self) -> Option<&T>

Access element in the map, returning reference to it, if present

pub fn get_raw(&self, id: &TypeId) -> Option<&Value<RawType>>

Access element in the map, returning reference to it, if present

pub fn get_mut<T: Type>(&mut self) -> Option<&mut T>

Access element in the map, returning mutable reference to it, if present

pub fn get_mut_raw(&mut self, id: &TypeId) -> Option<&mut Value<RawType>>

Access element in the map, returning mutable reference to it, if present

pub fn get_or_default<T: Type + Default>(&mut self) -> &mut T

Access element in the map, if not present, constructs it using default value.

pub fn insert<T: Type>(&mut self, value: T) -> Option<Box<T>>

Insert element inside the map, returning heap-allocated old one if any

Note

Be careful when inserting without explicitly specifying type. Some special types like function pointers are impossible to infer as non-anonymous type. You should manually specify type when in doubt.

pub fn insert_raw<T: Type>(&mut self, value: Value<T>) -> Option<Value<T>>

Insert raw element inside the map, returning heap-allocated old one if any

pub fn remove_raw(&mut self, id: &TypeId) -> Option<Value<RawType>>

Attempts to remove element from the map, returning boxed Some if it is present.

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

Attempts to remove element from the map, returning boxed Some if it is present.

Trait Implementations

impl Debug for TypeMap

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

Formats the value using the given formatter.

impl Default for TypeMap

fn default() -> Self

Returns the “default value” for a type.