Rust allocation example

This example shows how to pass strings in and out of a Wasm function definedin Rust, built withcargo build --release --target wasm32-unknown-unknown

$ go run greet.go wazeroHello, wazero!

Under the covers,lib.rs does a few things of interest:

• Uses a WebAssembly-tuned memory allocator:wee_alloc.
• Exports wrapper functions to allocate and deallocate memory.
• Uses&str instead of CString (NUL-terminated strings).
• Usesstd::mem::forget to prevent Rust from eagerly freeing pointers returned.

Note: We chose to not use CString because it keeps the example similar to howyou would track memory for arbitrary blobs. We also watched function signaturescarefully as Rust compiles different WebAssembly signatures depending on theinput type.

Seehttps://wazero.io/languages/rust/ for more tips.

There is no documentation for this package.