| // RUN: %target-parse-verify-swift |
| |
| func takeIntToInt(_ f: (Int) -> Int) { } |
| func takeIntIntToInt(_ f: (Int, Int) -> Int) { } |
| |
| // Anonymous arguments with inference |
| func myMap<T, U>(_ array: [T], _ f: (T) -> U) -> [U] {} |
| |
| func testMap(_ array: [Int]) { |
| var farray = myMap(array, { Float($0) }) |
| var _ : Float = farray[0] |
| let farray2 = myMap(array, { x in Float(x) }) |
| farray = farray2 |
| _ = farray |
| } |
| |
| // Infer result type. |
| func testResultType() { |
| takeIntToInt({x in |
| return x + 1 |
| }) |
| |
| takeIntIntToInt({x, y in |
| return 2 + 3 |
| }) |
| } |
| |
| // Closures with unnamed parameters |
| func unnamed() { |
| takeIntToInt({_ in return 1}) |
| takeIntIntToInt({_, _ in return 1}) |
| } |
| |
| // Regression tests. |
| |
| var nestedClosuresWithBrokenInference = { f: Int in {} } |
| // expected-error@-1 {{expression resolves to an unused function}} |
| // expected-error@-2 {{consecutive statements on a line must be separated by ';'}} {{44-44=;}} |
| // expected-error@-3 {{expected expression}} |
| // expected-error@-4 {{use of unresolved identifier 'f'}} |
