A single-header-only opaque type-erased object handle library for C++. For interop with C libraries that use incomplete types and for general type-erasure and type-safe internal casting.

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Avril 2f32c1538f Added TODO: Document the header and turn into a single-header library. Useful for C interop with incomplete types, and also for type-erasure (PIMPL-like usage with complete C++ types as a makeshift std::any that holds only 1 pointer and 1 type could come up.) ... Added TODO: Move impl-only constructs in the header into a (possible access-restricted or private) impl namespace. Fortune for opaque_handle's current commit: Future blessing − 末吉		3 years ago
include	Added TODO: Document the header and turn into a single-header library. Useful for C interop with incomplete types, and also for type-erasure (PIMPL-like usage with complete C++ types as a makeshift std::any that holds only 1 pointer and 1 type could come up.)	3 years ago
src	With fully incomplete types, `unsafe_cast` is used instead of `try_cast` in `operator [const] T*()`.	3 years ago
.gitignore	Tested all variants of `make_opaque_handle()`, they all work. `opaque_handle` workable in a project; however. `try_cast()` does not work correctly and will not return `nullptr` if the types are wrong. TODO: Fixing this will require a refactor to use another inheritance graph of objects instead of `void*`, however, this is intended for work using C interfaces, so it"s not a high priority for it to work on polymorphic types.	3 years ago