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41 lines
1.1 KiB
Swift
41 lines
1.1 KiB
Swift
// RUN: %target-typecheck-verify-swift
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func takeIntToInt(_ f: (Int) -> Int) { }
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func takeIntIntToInt(_ f: (Int, Int) -> Int) { }
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// Anonymous arguments with inference
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func myMap<T, U>(_ array: [T], _ f: (T) -> U) -> [U] {}
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func testMap(_ array: [Int]) {
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var farray = myMap(array, { Float($0) })
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var _ : Float = farray[0]
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let farray2 = myMap(array, { x in Float(x) })
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farray = farray2
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_ = farray
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}
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// Infer result type.
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func testResultType() {
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takeIntToInt({x in
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return x + 1
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})
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takeIntIntToInt({x, y in
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return 2 + 3
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})
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}
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// Closures with unnamed parameters
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func unnamed() {
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takeIntToInt({_ in return 1})
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takeIntIntToInt({_, _ in return 1})
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}
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// Regression tests.
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var nestedClosuresWithBrokenInference = { f: Int in {} }
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// expected-error@-1 {{closure expression is unused}} expected-note@-1 {{did you mean to use a 'do' statement?}} {{53-53=do }}
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// expected-error@-2 {{consecutive statements on a line must be separated by ';'}} {{44-44=;}}
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// expected-error@-3 {{expected expression}}
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// expected-error@-4 {{use of unresolved identifier 'f'}}
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