Sashay

Sashay contains type-erased and life-time erased types that mimic both regular Rust references and slices.

• &T -> AnyRef
• &mut T -> AnyMut
• *const/mut T -> AnyPtr
• &[T] -> AnySliceRef
• &mut [T] -> AnySliceMut
• *const/mut [T] -> AnySlicePtr

Any of these refs and muts can be constructed by calling ::erase() on a reference/slice. The lifetime is still stored on the object, as well as the TypeId, which is used to check if any downcast is valid.

The advantage of the slice types over using the regular ref types to [T] is that the AnySlice* types retain the slice length without having to downcast.

As far as I know the library is sound and passed cargo miri test, but outside of personal use it is untested, not used in production code (yet?) and has not been audited. If you have constructive feedback, that is much appreciated.

Example

```rust let data : [i32; 3] = [0, 1, 2]; let any = sashay::AnySliceRef::erase(data.asslice()); let slice = any.downcastref::().expect("any was not a &[i32]");

asserteq!(slice, data.asslice()); ```