Normal people: It's my birthday I should do something fun Me: It's my birthday here's 1500 words on how easy it is to bridge `impl FnMut(Thing)` and `void (*)(void*, thing_t)`
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Have you ever wanted to pass a Rust closure to a C API which takes a function pointer? It's surprisingly easy!https://blog.seantheprogrammer.com/neat-rust-tricks-passing-rust-closures-to-c …
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You're ignoring unwinding through FFI. That's a big problem here.
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oh man first time i saw this i think it was
@nokusu years ago and i was just taken by how simple yet brilliant it was -
Yeah it was 2 years ago that I needed to do this for Diesel. It was a feature that I expected to be way harder than it actually was. Just goes to show how solid Rust's support for FFI is.
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Nice! Reminds me the time I just gave the closure address and then moved the pointer to be beyond the vtable and "callable". Unsafe? Maybe a bit haha!
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Actually I think it's how most C bindings are doing to handle callbacks. At least we do something similar in gtk-rs.
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Oh my god I’m trying to achieve this because in need to register a callback to objective C when permissions are being requested, I’m gonna give it a try ASAP ! https://developer.apple.com/documentation/avfoundation/cameras_and_media_capture/requesting_authorization_for_media_capture_on_macos …
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Can’t say it ever happened to me
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