I know its not idiomatic to write generic functions in Go, but I want to explore my options before I dive into the go generate.
The problem I have is that the Value.Call() returns a slice where the element I interested in is a pointer to a custom struct. Seems like I cant find a way to access this.
returns := listMethod.Call([]reflect.Value{reflect.ValueOf(filter)})
fmt.Println(returns)
output
[<vspk.EnterpriseProfilesList Value> <*bambou.Error Value>]
type definition:
type EnterpriseProfilesList []*EnterpriseProfile
I want to get access to the vspk.EnterpriseProfilesList, but I am struggling to make it.
If I try to retrieve the underlying value like this:
returns := listMethod.Call([]reflect.Value{reflect.ValueOf(filter)})
ret1 := returns[0].Interface()
fmt.Println(ret1)
I receive
[0xc0000fc7e0]
Value.Call() returns a value of type []reflect.Value. What you're interested in is the first value of that slice: returns[0].
This will be of course of type reflect.Value. To extract the value wrapped in it, use Value.Interface().
This will be of type interface{}. If you need the concrete type, use a type assertion:
returns[0].Interface().(spk.EnterpriseProfilesList)
For example:
if list, ok := returns[0].Interface().(spk.EnterpriseProfilesList); ok {
// here list is of type spk.EnterpriseProfilesList
} else {
// it was nil or not of type spk.EnterpriseProfilesList
}