What is the difference between a Result Str {}
and Result Str *
?
The first means if it returns an Err
, the error payload is an empty record. The latter means if the error payload is an unbound value (which in practice means it should not return an error)
Really? I thought that Result Str *
could mean Result Str []*
. That would mean can return any error payload at all. I guess that is not the case?
Depends if it's an argument or a return value. If it's a return value that's compatible with any type, then it must never happen!
Because there is no real value that is compatible with all possible types
So if a function signature has this return type then it never returns the Err case
Ok. makes sense.
Last updated: Jul 05 2025 at 12:14 UTC