Struct ParamState 

pub struct ParamState<T> { /* private fields */ }

Implementations

impl<T> ParamState<T>

pub fn update(&mut self, new_value: &T) -> bool

where T: PartialEq + Clone,

pub fn update_shared(&mut self, new_value: &T) -> bool

where T: SharedParam + PartialEq + Clone,

update for an Rc or Arc parameter: the same allocation is unchanged without comparing its contents, which PartialEq on a pointer to a type that is not Eq otherwise walks in full on every recomposition.

pub fn value(&self) -> Option<T>

where T: Clone,

Trait Implementations

impl<T> Default for ParamState<T>

fn default() -> Self

Returns the “default value” for a type.