Trait EncodeReturn

pub unsafe trait EncodeReturn: Sealed {
    const ENCODING_RETURN: Encoding;
}

Types that are safe as the return value from Objective-C.

This is a sealed trait, and should not need to be implemented manually.

Safety

Similar to Encode, except the value is only guaranteed to be valid as a return value, both from functions/methods you’re calling, and from declared functions/methods.

It does not have to be valid as e.g. an instance variable, or as an argument to a function.

Required Associated Constants

const ENCODING_RETURN: Encoding

The Objective-C type-encoding for this type.

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.

Implementations on Foreign Types

impl EncodeReturn for ()

const ENCODING_RETURN: Encoding = Encoding::Void

Implementors

impl<T: Encode> EncodeReturn for T

const ENCODING_RETURN: Encoding = T::ENCODING