Function Bind

di/optional_provider.go:64–72

Bind binds a type to another. Useful when binding implementation to interfaces. The arguments should be a ptr to the binding types, rather than the types themselves. For example: Bind(new(MyConcreteStruct), new(MyAbstractInterface))

(from interface{}, to interface{})

// the types themselves. For example:
//  Bind(new(MyConcreteStruct), new(MyAbstractInterface))
func Bind(from interface{}, to interface{}) interface{} {
	fromTypes := []reflect.Type{reflect.TypeOf(from).Elem()}
	toTypes := []reflect.Type{reflect.TypeOf(to).Elem()}
	fnType := reflect.FuncOf(fromTypes, toTypes, false /* variadic */)
	fn := reflect.MakeFunc(fnType, func(args []reflect.Value) []reflect.Value {
		return args
	})
	return fn.Interface()
}