Am looking for insight into why the dataArray_LookupCode output array is
partially correct.
The newUUID() function correctly assigns to each element of the
dataArray_LookupCode array, but the *LookupCode field values are all the
values of the last element of the LookupCodes data source array.
Why?
package main
import (
"crypto/rand"
"strconv"
"fmt"
"io"
//"encoding/json"
//"time"
)
func newUUID() (string, error) {
uuid := make([]byte, 16)
n, err := io.ReadFull(rand.Reader, uuid)
if n != len(uuid) || err != nil {
return "", err
}
// variant bits; see section 4.1.1
uuid[8] = uuid[8]&^0xc0 | 0x80
// version 4 (pseudo-random); see section 4.1.3
uuid[6] = uuid[6]&^0xf0 | 0x40
return fmt.Sprintf("%x-%x-%x-%x-%x", uuid[0:4], uuid[4:6], uuid[6:8],
uuid[8:10], uuid[10:]), nil
}
type LookupCode struct
{
CodeId string `json:"codeid"`
Description string `json:"description"`
Active bool `json:"active"`
}
type UUID_LookupCode struct
{
UUID string `json:"uuid"`
lookup *LookupCode `json:"lookup"`
// *LookupCode [does not work]
}
var LookupCodes []LookupCode
var dataArray_LookupCode []UUID_LookupCode
func init() {
LookupCodes = []LookupCode {
LookupCode {
Active: true,
CodeId: "USA_00",
Description: "All US States",
},
LookupCode {
Active: true,
CodeId: "USA_01",
Description: "All US Western compact States",
},
}
dataArray_LookupCode := make([]UUID_LookupCode, 0)
for _, xt1 := range LookupCodes {
c1 := &UUID_LookupCode{}
c1.lookup = &xt1
//c1.LookupCode.CodeId = xt1.CodeId
typeKey, err := newUUID()
if err == nil {
c1.UUID = typeKey
}
fmt.Println(c1.lookup.CodeId ) // correct output: USA_00 USA_01
dataArray_LookupCode = append(dataArray_LookupCode, *c1)
}
fmt.Printf(strconv.Itoa(len(dataArray_LookupCode))) // correct output: 2
fmt.Println(dataArray_LookupCode[0].lookup.CodeId,dataArray_LookupCode[1].lookup.CodeId)
// incorrect output: USA_01 USA_01
}// init
func main() {
}
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