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rust-fib

Fibonacci in plain Rust/WASM — no wasm-bindgen, no JS glue. Uses a raw #[no_mangle] extern "C" export and the legacy numeric-argument invoke route.

Deploy

ribo deploy    # runs: cargo build --target wasm32-unknown-unknown --release

Invoke

# POST /invoke/<addr>/fibonacci  with JSON {"args":[n]}
curl -X POST http://localhost:8080/invoke/<addr>/fibonacci -d '{"args":[10]}'
# → {"result": 55, ...}

# or via query string
curl 'http://localhost:8080/invoke/<addr>/fibonacci?args=10'

What this demonstrates

  • The simplest possible WASM Cell: one #[no_mangle] function, no dependencies
  • Legacy /invoke/:addr/:fn route for plain-WASM numeric calls
  • The distinction between plain-WASM cells (numeric args, /invoke) and wasm-bindgen cells (HTTP handler, /<addr>/*)
  • cargo build --target wasm32-unknown-unknown as the build command (no wasm-pack needed)