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Comment by game-of-throws | Hacker News Reader

You'd pair it with something like this https://docs.rs/unwrap-infallible/

I don't see how that would work.

    d[0..4].try_into()

The type of the result is something like:

    Result<[u8; 4], TryFromSliceError>

How do I convert that into

    Result<[u8; 4], Infallible>

As far as I can tell, Infallible is there because you're implementing a trait which returns an error, but you don't have an error to return at all.

In jacobr1's comment we already have a way to get a Result<_, Infallible>. But converting a slice to an array returns a real error type, so my comment wouldn't apply.

For your case just stick with `.try_into().unwrap()`. It's the easiest way. Unless of course someone on crates.io made a fancy crate with const generics.

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