service_async

Trait ParamMaybeRef

Source 
pub trait ParamMaybeRef<T> {
    // Required method
    fn param_maybe_ref(&self) -> Option<&T>;
}
Expand description

Item of type T may have been set in a certain_map slot and returns Option<&T>

Required Methods§

Source

fn param_maybe_ref(&self) -> Option<&T>

Implementors§