// Copyright (c) Facebook, Inc. and its affiliates. import Foundation // Swift tuples are not properly equatable or hashable. This ruins our data model so we must use homemade structs as in Java. public struct Tuple2: Hashable { public var field0: T0 public var field1: T1 public init(_ field0: T0, _ field1: T1) { self.field0 = field0 self.field1 = field1 } }