Requesting some clarification on a sentence in README about uuid HOT 2 CLOSED

Yes, that is the correct understanding.

The original uuid package (github.com/pborman/uuid) was based on slices has the following function:

func Parse(s string) UUID

This package had to change this to:

func Parse(s string) (UUID, error)

If you have a type that contains an optional UUID nothing special needs to be added for a byte slice representation:

type S struct {
        ID uuid.UUID
}

if s.ID != nil {
        fmt.Printf("ID is %v\n", s.ID)
}

With an array it becomes be one of

type S1 struct {
        ID     uuid.UUID
        HaveID bool
}
type S2 struct {
        ID *uuid.UUID
}

if s1.HaveID {
        fmt.Printf("ID is %v\n", s1.ID)
}
if s2.ID != nil {
        fmt.Printf("ID is %v\n", *s2.ID)
}

This is the only reason that there is both a github/pborman/uuid package and a github/google/uuid package (the pborman version is the original, the google version addresses the desire of making UUIDs comparable objects by switch from a slice to an array. It changes the code from:

if uuid.Compare(uuid1, uuid2) {

to

if uuid1 == uuid2 {

and also allows UUIDs to be used as keys in a map.

from uuid.

@pborman I see, thank you for the clarification! I'll close this issue out.

from uuid.