3 ms·

How to return an error in your example?

• tcfhgj 2y ago
  Throw an exception proving the point of the article even further
  • wtetzner 2y ago
    You would actually use a Result type: use std::io; pub fn read(path: Path) -> io::Result<Bytes> { File::open(path)?.read_to_end() }
    • tcfhgj 2y ago
      Sure, if you are allowed to change the signature, makes it look more ugly than just returning Bytes though
• gary_0 2y ago
  pub fn read(path: Path) -> Result<Bytes> { File::open(path)?.read_to_end() } isn't so bad either.
  • remcob 2y ago
    Exactly, and this is in my experience what most Rust code ends up looking like. It compromises a bit on generality and (potential) performance to achieve better readability and succinctness. Often a worthwhile trade-off, but not something the standard library can always do.