I'm still just growing organically. Constant errors are useful for sentinel values https://dave.cheney.net/2016/04/07/constant-errors https://dave.cheney.net/20

I'm still just growing organically. Constant errors are useful for sentinel values https://dave.cheney.net/2016/04/07/constant-errors https://dave.cheney.net/2016/04/07/constant-errors . RFC9457 https://datatracker.ietf.org/doc/html/rfc9457 https://datatracker.ietf.org/doc/html/rfc9457 is useful for REST (JSON) APIs. pkg/errors is nice for stack traces. I define error structs with field to pass structured data instead of trying to parse strings.