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Comment by vikiomega9 | Hacker News Reader

Can you say more here, I don't have the context.

This code is identical to

  let file = file.expect("file was null");

That is, the "expect" method does exactly this.

I like Rust from what I've tried. But I'd have preferred something like this:

  let file = file.unwrapOrPanicWith("file was null");

option.expect(message) doesn't semantically make sense.

I read it as expect (prepare) for the worst!

There was some discussion about this when the method was named; you're not alone. In the end, it is what it is. You could define your own method like that if you really wanted to.

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