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The rule changes are as follows: * All functions (introduced with the 'func' keyword) have argument labels for arguments beyond the first, by default. Methods are no longer special in this regard. * The presence of a default argument no longer implies an argument label. The actual changes to the parser and printer are fairly simple; the rest of the noise is updating the standard library, overlays, tests, etc. With the standard library, this change is intended to be API neutral: I've added/removed #'s and _'s as appropriate to keep the user interface the same. If we want to separately consider using argument labels for more free functions now that the defaults in the language have shifted, we can tackle that separately. Fixes rdar://problem/17218256. Swift SVN r27704
24 lines
598 B
Swift
24 lines
598 B
Swift
// RUN: %target-parse-verify-swift
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var t1a: (Int...) = (1) // expected-error{{cannot create a variadic tuple}}
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var t2d: (Double = 0.0) = 1 // expected-error {{default argument not permitted in a tuple type}}
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func f1(a: Int...) { for x in a {} }
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f1()
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f1(1)
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f1(1,2)
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func f2(a: Int, _ b: Int...) { for x in b {} }
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f2(1)
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f2(1,2)
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f2(1,2,3)
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func f3(a: (String) -> Void) { }
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f3({ print($0) })
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func f4(a: Int..., b: Int) { } // expected-error{{'...' must be on the last parameter}}
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// rdar://16008564
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func inout_variadic(inout i: Int...) { // expected-error {{inout arguments cannot be variadic}}
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}
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