Either an error or a value. The error type is a parameter too, so a caller
chooses how rich its errors are.
35family StdResult : Type 0
36parameter erased stdResultError : Type 0
37parameter erased stdResultValue : Type 0
38constructor StdFailure
39field unrestricted stdFailureError : stdResultError
40constructor StdSuccess
41field unrestricted stdSuccessValue : stdResultValueThe compiler supplied declaration spans and resolved links from this source snapshot. This page does not assert that this file belongs to a checked closure.