Trait certain_map::ParamMut

pub trait ParamMut<T> {
    // Required method
    fn param_mut(&mut self) -> &mut T;
}

Item of type T has been set in a certain_map slot and returns a mutable reference.

When used as a trait bound, ParamMut<T> ensures that the constrained type has previously used the ParamSet<T> trait to set the value of type T in a certain_map slot. This allows the caller to guarantee at compile-time that the value of T is available and can be mutably accessed from the implementing type using the param_mut method.

Example

fn process_param_mut<P: ParamMut<T>, T>(param_provider: &mut P) {
    let value_mut: &mut T = param_provider.param_mut();
    // Modify the value of type T
}

Required Methods

fn param_mut(&mut self) -> &mut T

Implementors