Trait cvar::OnChange

pub trait OnChange<T> {
    fn change(&self, old: &T, val: T) -> BoxResult<T>;
}

Property callback when its value is changed.

Required Methods

fn change(&self, old: &T, val: T) -> BoxResult<T>

Given the old and assigned values produces the new value.

May return a validation error.

Implementors

• impl<T> OnChange<T> for Pass
• impl<T, F> OnChange<T> for F where F: Fn(&T, T) -> BoxResult<T>