let tuples1: [(Int, Int)?]
tuples1 = [                      // Swift 2.2: error: use of '=' in a boolean context, did you mean '=='?
  true ? (1, 2) : nil            // Swift 3: 'Int1' is not convertible to 'Bool'
]

let tuples11: [(Int, Int)?]?
tuples11 = [                     // 'Int1' is not convertible to 'Bool'
  true ? (1, 2) : nil
]

let tuples12: [(Int, Int)?]? = [ // 'Int1' is not convertible to 'Bool'
  true ? (1, 2) : nil
]

let tuples2: [(Int, Int)?] = [true ? (1, 2) : nil]

let tuples3: [(Int, Int)?]
tuples3 = [(1, 2)]

let tuples31: [(Int, Int)?]?
tuples31 = [(1, 2)]

let tuples32: [(Int, Int)?]? = [(1, 2)]

let tuples4: [(Int, Int)]
tuples4 = [true ? (1, 2) : (3, 4)]

let ints1: [Int?]
ints1 = [true ? 1 : nil]

let ints2: [Int?] = [true ? 1 : nil]

let ints3: [Int?]? = [true ? 1 : nil]

let ints4: [Int]? = [true ? 1 : 2]