> Even a basic hello world in rust will set you back a few megabytes Lies. It’s 35 kB: $ cargo new x … $ cd x $ cat src/main.rs fn main() {

> Even a basic hello world in rust will set you back a few megabytes Lies. It’s 35 kB: $ cargo new x … $ cd x $ cat src/main.rs fn main() { println!("Hello, world!"); } $ cargo build --release --target=wasm32-unknown-unknown … $ ls -l target/wasm32-unknown-unknown/release/x.wasm … 34597 … And that’s with the default allocator and all the std formatting and panic machinery. Without too much effort, you can get it to under 1 kB, if I remember correctly. For the rest: I mention comparisons being unbalanced because people often assume it will scale at the rate they’ve seen—twice as much code, twice as much size. Runtimes and heavy tables make for non-scaling overhead. That 35 kB you’ve paid for once, and now can use as much as you like without further growth.