Yep, although I guess the Try trait[0] and the corresponding ? operator count as a special error handling language construct.

[0]: https://doc.rust-lang.org/std/ops/trait.Try.html

The Result type is specifically designed to store value-or-error. One may use it diffently but that’s what it’s made for.

The library designers had a choice between making a generic this-or-that type or a value-or-error type and they chose the latter because they thought that that would be the common this-or-that use-case.

Even Haskell’s more generic-sounding “Either” type is made for the same purpose: the “right” (as in correct) variant is the value while the left side is the error, by convention.

While Result is designed for that, it was built with an Enum (see here: https://doc.rust-lang.org/src/core/result.rs.html#241-251)

So you can also build an enum that doesn't have any explicit mention of which is the right path

I don't understand what the problem is, in that case. Is it just the fact that it's called an Error instead of something more generic? Not trying to sound dismissive, just trying to understand if there's something I'm missing.

The problem? You would have to ask the poster that you initially replied to.

Fair enough :)