Trait FunctionArgumentHolder 

pub trait FunctionArgumentHolder: Sized + Sealed {
    const INIT: Self;
}

Trait for types which can be a function argument holder - they should to be able to const-initialize to an empty value.

Required Associated Constants

const INIT: Self

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FunctionArgumentHolder for ()

const INIT: Self = ()

impl<T> FunctionArgumentHolder for Option<T>

const INIT: Self = None

Implementors