pub trait FromRef<T> {
// Required method
fn from_ref(input: &T) -> Self;
}Expand description
Used to do reference-to-value conversions thus not consuming the input value.
This is mainly used with State to extract “substates” from a reference to main application
state.
See State for more details on how library authors should use this trait.
This trait can be derived using #[derive(FromRef)].