How to Avoid Doing FFI

If your goal is not do FFI, this may have been the wrong class! With that said, it's important to think about alternatives.

You could:

• Wrap up the code you need in another language in an executable and run it with std::process::Command.
  • Now every call requires that you setup its inputs.
  • Every call requires that the OS load the program, allocate it, etc.
  • Now you have to read the input.
  • And worst of all - you aren't writing Rust!
• You could put it on a microservice
  • Now you pay for a network call every time you need it.
  • You still have to wrap the input/output, and
  • You're still not writing Rust.