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)]
.
Required Methods§
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.