creator

type Builder interface {
	Part1()
	Part2()
	Part3()
}

type Builder1 struct {
	// contains filtered or unexported fields
}

type Builder2 struct {
	// contains filtered or unexported fields
}

type Director struct {
	// contains filtered or unexported fields
}

type Message struct {
	// contains filtered or unexported fields
}

type MinusOperator struct {
	*OperatorBase
}

type MinusOperatorFactory struct{}

type Operator interface {
	SetA(int)
	SetB(int)
	Result() int
}

type OperatorBase struct {
	// contains filtered or unexported fields
}

type OperatorFactory interface {
	Create() Operator
}

type Option func(msg *Message)

type PlusOperator struct {
	*OperatorBase
}

type PlusOperatorFactory struct{}

type Singleton interface {
	// contains filtered or unexported methods
}