Simple Rust WebAssembly Tutorial Request

[frehberg]

Please see this mini-demo, I used as hands-on compiling to wasm-target.

GitHub - frehberg/rust-wasm-strip: Sample, compiling Rust code to target...

My intention was to get the code as small as possible, but the panic-handler caused some overhead. AFAIK, this has been improved recently (I can't find the link)

Compile Rust to target WASM, how to strip to 300Bytes?

Wen compiing the following Rust lib.rs to target system WASM, I get a file of 57KB. #[no_mangle] pub extern "C" fn transform(arlen: i32, ar: &mut [u8]) -> i32 { const ICHAR: u8 = 105; const OCHAR: u8 = 111; for i in 0..arlen as usize { if ar[i] == ICHAR { ar[i] = OCHAR; } } return arlen; } The cargo command being used is as follows: cargo +nightly build --release --target wasm32-unknown-unknown In contrast, compiling a similar C++ code to WASM with emscripten the resultin…