[unsignedqword]

Handling it as tuples is just as fine, but it's important that a language intending to do so be devoid of verbosity and cruft. For example, D supports tuples, but I would not want to attempt Go-style error handling in it: https://rosettacode.org/wiki/Return_multiple_values#D

You make a good point, too, that multiple-return being the only way to do errors is more ideal than the language saying "oh, we support that, but we also have exceptions, too!" At least in a language with Go's philosophy, you can expect other people's libraries and your own code to play by the same rules.