I found the same code in several different places. Wikipedia was the place I ultimately copy/pasted it from.

Huh, I don't see this code on Wikipedia.

I ask because it's very much not "canonical," Just and Nothing are Haskell terms, not Rust terms. You'd expect at least Some and None.

Regardless, I do agree that in this specific circumstance, you're emulating an if. There's even a form in this case that emulates it even more closely:

  if Some(x) = divide(3.0, 2.0) {
      println!("Answer: ", x);
  } else {
      println!("division failed; we'll get 'em next time.");
  }

But these simple cases don't show off where Option/Result truly shine.

Ah, thanks, I was looking at the Rust page. I'll consider sending them an edit.

Sent one in: https://en.wikipedia.org/w/index.php?title=Monad_(functional... we'll see if it gets reverted. Honestly, I find this whole section kind of awkward. I fully agree with you that it doesn't really show off why this stuff works, and works well. Real-world code doesn't get written like this.

you're missing a `let`

dangit, thanks. can't edit now though...