TSAO

Eliminates runtime casting by associating value types with keys at compile time, as highlighted in the README's key features, ensuring type errors are caught early.

Stores Swift value types like Int and structs through automatic boxing, overcoming Objective-C's object-only limitation, as described in the philosophy section.

Supports atomic/nonatomic retain, assign for classes, and copy for NSCopying types, providing flexible memory management options as detailed in the usage example.

Designed to allow the optimizer to remove type checks with zero runtime overhead, as noted in the README's footnote about compiler optimizations.