3 ms·

Taking a cursory look at their example, and this caught my eye: supervisor .broadcast("A message containing data.") .expect("Couldn't broadcast

• tmtvl 4y ago
  That's standard Rust error-handling code: it prints an error message and panics out (if I remember correctly, I haven't touched Rust in years).
  • 1letterunixname 4y ago
    "I found Rust when no one heard of them, man. They really knew how to put on a show back then. Now, they're so mainstream and commercial, I'm over 'em. Their latest album is so pop. I heard from their managers that brainfuck and Zig are touring this year." <- Hipsters on music ; @ D
• nequo 4y ago
  I think the recommendation is to phrase the error message that is given to .expect() not as what went wrong but as what we had expected to happen.[1] If the example that you show was consistent with that recommendation, it might look like this: supervisor .broadcast("A message containing data.") .expect("message broadcast should not fail"); Although even if you are a native English speaker, this is dubious improvement if you don’t know what Option types are and what .expect() does with them. [1] https://doc.rust-lang.org/std/option/enum.Option.html#recommended-message-style https://doc.rust-lang.org/std/option/enum.Option.html#recomm...
• 1letterunixname 4y ago
  expect() is an assertion of non-failure. The string is the panic message on failure.