intro.md

FFI Idioms

Writing FFI code is an entire course in itself. However, there are several idioms here that can act as pointers, and avoid traps for inexperienced users of unsafe Rust.

This section contains idioms that may be useful when doing FFI.

1. Idiomatic Errors - Error handling with integer codes and sentinel return values (such as NULL pointers)

2. Accepting Strings with minimal unsafe code

3. Passing Strings to FFI functions