optional

type Interface[T any] interface {
	// Set the optional value
	Set(T)

	// Get the optional value, IsNil() MUST be checked before calling this method
	Get() T

	// Erase the optional value, after calling this, IsNil() will return true
	// until Set(T) is called.
	Erase() bool

	// IsNil returns true when there is no optional value
	IsNil() bool
}

type Value[T any] struct {
	V T
	// contains filtered or unexported fields
}