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fc93edbc96
Such overloads are not going to result in viable solutions anyway, so it makes sense to attempt them only if solver failed to deduce proper solution. Helps to improve type-checking performance of operators which have multiple unavailable overloads for compatibility reasons.
28 lines
1.9 KiB
Swift
28 lines
1.9 KiB
Swift
// RUN: %target-swift-frontend -typecheck -swift-version 3 %s -verify
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func testPopFirst() {
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var str = "abc"
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_ = str.popFirst() // expected-warning{{'popFirst()' is deprecated: Please use 'first', 'dropFirst()', or 'Substring.popFirst()'}}
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_ = str.characters.popFirst() // expected-warning{{'characters' is deprecated: Please use String or Substring directly}}
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// expected-warning@-1{{'popFirst()' is deprecated: Please use 'first', 'dropFirst()', or 'Substring.CharacterView.popFirst()'}}
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_ = str.unicodeScalars.popFirst() // expected-warning{{'popFirst()' is deprecated: Please use 'first', 'dropFirst()', or 'Substring.UnicodeScalarView.popFirst()'}}
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var charView: String.CharacterView // expected-warning{{'CharacterView' is deprecated: Please use String or Substring directly}}
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charView = str.characters // expected-warning{{'characters' is deprecated: Please use String or Substring directly}}
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dump(charView)
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var substr = str[...]
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_ = substr.popFirst() // ok
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_ = substr.characters.popFirst() // expected-warning{{'characters' is deprecated: Please use String or Substring directly}}
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_ = substr.unicodeScalars.popFirst() // ok
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var charSubView: Substring.CharacterView // expected-warning{{'CharacterView' is deprecated: Please use String or Substring directly}}
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charSubView = substr.characters // expected-warning{{'characters' is deprecated: Please use String or Substring directly}}
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dump(charSubView)
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var _ = String(str.utf8) ?? "" // expected-warning{{'init' is deprecated: Failable initializer was removed in Swift 4. When upgrading to Swift 4, please use non-failable String.init(_:UTF8View)}}
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var _ = String(str.utf8) // expected-warning{{'init' is deprecated: Failable initializer was removed in Swift 4. When upgrading to Swift 4, please use non-failable String.init(_:UTF8View)}}
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var _: String = String(str.utf8) // expected-error {{value of optional type 'String?' not unwrapped; did you mean to use '!' or '?'?}}
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}
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