cxx::memory

Trait UniquePtrTarget

Source 
pub unsafe trait UniquePtrTarget { }
Expand description

Trait bound for types which may be used as the T inside of a UniquePtr<T> in generic code.

This trait has no publicly callable or implementable methods. Implementing it outside of the CXX codebase is not supported.

§Example

A bound T: UniquePtrTarget may be necessary when manipulating UniquePtr in generic code.

use cxx::memory::{UniquePtr, UniquePtrTarget};
use std::fmt::Display;

pub fn take_generic_ptr<T>(ptr: UniquePtr<T>)
where
    T: UniquePtrTarget + Display,
{
    println!("the unique_ptr points to: {}", *ptr);
}

Writing the same generic function without a UniquePtrTarget trait bound would not compile.

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§