如何使用Golang获取与另一个变量相同类型的新变量

Question

How can I do this? I want a function to return a variable with the same type as one of its arguments. I need something like the below:

type Whatever struct {
    Title string
}

hey:= Whatever{Title:"YAY"}
thetype := reflect.ValueOf(hey).Kind()

// This does not work
BB:= new(thetype)

Answer 1

If you want to create a new value from a reflect.Type you can do it with reflect.New:

thetype := reflect.TypeOf(hey)
BB:= reflect.New(thetype)

This returns a reflect.Value
You can then for example use .Interface() and type assertions to get back to the original type.

Example on Go playground: https://play.golang.org/p/rL-Hm0IUpd