Trait cvar::Variable

pub trait Variable<T> where
    T: Debug, {
    fn get(&self) -> T;
    fn set(&self, val: T);
    fn with<R, F>(&self, f: F) -> R
    where
        F: FnOnce(&T) -> R;
}

Abstraction over interior mutability.

Required Methods

fn get(&self) -> T

Gets a clone of the value.

fn set(&self, val: T)

Sets a new value.

fn with<R, F>(&self, f: F) -> R where
    F: FnOnce(&T) -> R, 

Work with the value without a potentially expensive clone.

Implementors

• impl<'a, T, V> Variable<T> for &'a V where
    T: Debug,
    V: Variable<T>, 
• impl<T> Variable<T> for Cell<T> where
    T: Copy + Debug, 
• impl<T> Variable<T> for RefCell<T> where
    T: Clone + Debug,