Default value to the entry that key already exists in a map #28
Description
Hi, thank you for making and maintaining such an amazing package. It helps me a lot!
I'm facing an issue that is not able to set default values within a map[string]struct{}. I'd like to set the default value to the entry that key already exists in a map. But it doesn't work well:
package main
import (
"fmt"
"github.com/creasty/defaults"
)
type T struct {
Field string `default:"value-1"`
}
type Foo struct {
Map map[string]T
T T
}
func main() {
f := &Foo{
Map: map[string]T{
// I want to set the default value here.
"key-1": T{},
},
}
if err := defaults.Set(f); err != nil {
panic(err)
}
fmt.Printf("field in map: %q\n", f.Map["key-1"].Field)
fmt.Printf("field in struct: %q\n", f.T.Field)
// Output:
//
// field in map: ""
// field in struct: "value-1"
}Currently, I workaround like:
for k, v := range f.Map {
_ = defaults.Set(&v)
f.Map[k] = v
}Is there another way to set a default value for a value that already has a key in the map?
Thanks!