GO Reflex (reflection)

This is a creation in Article, where the information may have evolved or changed.

// jsondemo project main.gopackage mainimport ("fmt""reflect")type T struct {A intB string}func main() {//1var x float64 = 3.4fmt.Println("type:", reflect.TypeOf(x))v := reflect.ValueOf(x) //reflect.Valuefmt.Println("type", v.Type())fmt.Println("kind is float64:", v.Kind() == reflect.Float64)fmt.Println("value:", v.Float())//2p := reflect.ValueOf(&x)fmt.Println("type of p:", p.Type())fmt.Println("settability of p:", p.CanSet())v = p.Elem()fmt.Println("settability of v:", v.CanSet())v.SetFloat(7.1)fmt.Println(v.Interface())fmt.Println(x)//3t := T{203, "mh203"}s := reflect.ValueOf(&t).Elem()typeOfT := s.Type()for i := 0; i < s.NumField(); i++ {f := s.Field(i)fmt.Printf("%d: %s %s = %v\n", i,typeOfT.Field(i).Name, f.Type(), f.Interface())}}

Output:

type: float64type float64kind is float64: truevalue: 3.4type of p: *float64settability of p: falsesettability of v: true7.17.10: A int = 2031: B string = mh203