AnyDerivative

public var base: Any { get }

@differentiable
public init<T>(_ base: T) where T : Differentiable, T == T.TangentVector

public typealias TangentVector = AnyDerivative

public static func == (lhs: AnyDerivative, rhs: AnyDerivative) -> Bool

public static func != (lhs: AnyDerivative, rhs: AnyDerivative) -> Bool

public static var zero: AnyDerivative { get }

public static func + (
  lhs: AnyDerivative, rhs: AnyDerivative
) -> AnyDerivative

public static func - (
  lhs: AnyDerivative, rhs: AnyDerivative
) -> AnyDerivative

public mutating mutating func move(along direction: TangentVector)