| // RUN: %target-run-simple-swift | %FileCheck %s |
| // REQUIRES: executable_test |
| |
| func double(_ x: Int) -> Int { |
| return x+x |
| } |
| |
| func curriedSubtract(_ x: Int) -> (Int) -> Int { |
| return { y in x - y } |
| } |
| |
| func twice(_ f: (Int) -> Int, _ x: Int) -> Int { |
| return f(f(x)) |
| } |
| |
| // CHECK: 4 |
| print(double(2)) |
| // CHECK: 8 |
| print(double(4)) |
| |
| // CHECK: 12 |
| print(curriedSubtract(16)(4)) |
| |
| // CHECK: 20 |
| print(twice(double, 5)) |
| // CHECK: 7 |
| print(twice({ $0 + 1 }, 5)) |
| // CHECK: 3 |
| print(twice({ x in x - 1 }, 5)) |
| |
| // <rdar://problem/22044607> |
| class C {} |
| class D : C {} |
| |
| func foo(_ a: Any, p2: Bool = true) { print("Wrong") } |
| func foo(_ c: C) { print("Right") } |
| |
| func bar(_ a: Any..., p2: Bool = true) { print("Wrong") } |
| func bar(_ c: C) { print("Right") } |
| |
| // CHECK: Right |
| foo(D()) |
| // CHECK: Right |
| bar(D()) |
