Struct ComponentData 

pub struct ComponentData {
    value: Box<dyn Component>,
}

A type-erased component value.

Component values retain their concrete Rust type and can be recovered with Self::downcast_ref.

Fields

value: Box<dyn Component>

Implementations

impl ComponentData

pub fn new(value: impl Component) -> Self

Erases a typed component value.

pub fn downcast_ref<T: DowncastType>(&self) -> Option<&T>

Returns the concrete value when it has type T.

pub fn type_key(&self) -> DowncastTypeKey

Returns the concrete type key.

Trait Implementations

impl Clone for ComponentData

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ComponentData

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

Formats the value using the given formatter.

impl PartialEq for ComponentData

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.