pointer
Go package pointer provides helpers to convert between pointers and values of built-in
(and, with Go 1.18+ generics, of any) types.
go get github.com/AlekSi/pointer
API is stable. Documentation.
package motivationalexample
import (
"encoding/json"
"github.com/AlekSi/pointer"
)
const (
defaultName = "some name"
)
// Stuff contains optional fields.
type Stuff struct {
Name *string
Comment *string
Value *int64
Time *time.Time
}
// SomeStuff makes some JSON-encoded stuff.
func SomeStuff() (data []byte, err error) {
return json.Marshal(&Stuff{
Name: pointer.ToString(defaultName), // can't say &defaultName
Comment: pointer.ToString("not yet"), // can't say &"not yet"
Value: pointer.ToInt64(42), // can't say &42 or &int64(42)
Time: pointer.ToTime(time.Date(2014, 6, 25, 12, 24, 40, 0, time.UTC)), // can't say &time.Date(…)
})
}
