Hash trait that is object-safe

This crate provides a DynHash trait that can be used in trait objects. Types that implement the standard library's std::hash::Hash trait are automatically usable by a DynHash trait object.

Example

use dyn_hash::DynHash;

trait MyTrait: DynHash {
    /* ... */
}

// Implement std::hash::Hash for dyn MyTrait
dyn_hash::hash_trait_object!(MyTrait);

// Now data structures containing Box<dyn MyTrait> can derive Hash:
#[derive(Hash)]
struct Container {
    trait_object: Box<dyn MyTrait>,
}

License