要做到这一点，你需要reflect美元.
package main
import (
"fmt"
"reflect"
)
func main() {
// one way is to have a value of the type you want already
a := 1
// reflect.New works kind of like the built-in function new
// We'll get a reflected pointer to a new int value
intPtr := reflect.New(reflect.TypeOf(a))
// Just to prove it
b := intPtr.Elem().Interface().(int)
// Prints 0
fmt.Println(b)
// We can also use reflect.New without having a value of the type
var nilInt *int
intType := reflect.TypeOf(nilInt).Elem()
intPtr2 := reflect.New(intType)
// Same as above
c := intPtr2.Elem().Interface().(int)
// Prints 0 again
fmt.Println(c)
}
您可以使用 struct 类型而不是int类型来做同样的事情.或者别的什么，真的.当涉及到映射和切片类型时，请确保了解new和make之间的区别.