Trait cxx::memory::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.

Implementors§