About getting data, such as strings

[danewalters]

I want to load the .wasm file directly. Then get the data by address and length, I didn't find any documentation or examples for that. I hope I can get your help. And I'm still confused about how rust returns strings without using wasi. Because I found that rust does not support multiple value return. So what should I do if I want to get both the address and the length of the string

[viniarck]

@joeywang321, sounds like you'd like to manipulate a Memory object (let me know if you meant something else). With a Memory object wasmtime provide functions to read and write bytes. If you're working with a string then you'd have to deal with conversion from/to bytes. wasmtime-ex currently only supports functions though, one day, other wasmtime objects will get supported.

You can also checkout wasmex in case you'd be OK with wasmer instead of wasmtime, that Elixir project has implemented Memory functionalities.

[danewalters]

Thank you very much for your answer, Memory this is what I want