An example, computing the dotproduct of two 2-dimensional vectors with Risc0. To run the code, you'll need a working rust installation, then just cargo run.

Main tips:

• Unless your inputs are simple, write a wrapper Inputs or Args struct in a separate core library, and use the library from your methods and dotproduct (or whatever your binary crate is called) to serialize and deserialize the argument. This sidesteps some issues with the Risc-0 glue code, which tends to produce difficult to read errors.
• Build times tend to be long. If you're just testing your core or methods directory, build and test from those directories to shorten your iteration loop.