Trait IsEmpty 

pub unsafe trait IsEmpty: Sized {
    // Required method
    fn is_empty(value: &MaybeEmpty<Self>) -> bool;
}

Implement this trait for a type to allow it to be used with MaybeEmpty.

Safety

Implementors must guarantee that if is_empty returns true for a given MaybeEmpty<T>, that value meets all the requirements for a value of type T.

Required Methods

fn is_empty(value: &MaybeEmpty<Self>) -> bool

Returns whether the given value is “empty” according to its own internal logic.

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.

Implementors