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30 lines
2.2 KiB
Swift
30 lines
2.2 KiB
Swift
// RUN: %target-parse-verify-swift
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import Foundation
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// Common pitfall: trying to subscript a string with integers.
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func testIntSubscripting(s: String, i: Int) {
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let c1 = s[i] // expected-error{{'subscript' is unavailable: cannot subscript String with an Int}}
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let c2 = s[17] // expected-error{{'subscript' is unavailable: cannot subscript String with an Int}}
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let c3 = s[i...i] // expected-error{{subscript' is unavailable: cannot subscript String with a range of Int}}
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let c4 = s[17..<20] // expected-error{{subscript' is unavailable: cannot subscript String with a range of Int}}
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let c5 = s[17...20] // expected-error{{subscript' is unavailable: cannot subscript String with a range of Int}}
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}
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func testAmbiguousStringComparisons(s: String) {
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let nsString = s as NSString
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let a1 = s == nsString // expected-error{{'==' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a2 = s != nsString // expected-error{{'!=' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a3 = s < nsString // expected-error{{'<' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a4 = s <= nsString // expected-error{{'<=' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a5 = s >= nsString // expected-error{{'>=' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a6 = s > nsString // expected-error{{'>' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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// now the other way
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let a7 = nsString == s // expected-error{{'==' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a8 = nsString != s // expected-error{{'!=' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a9 = nsString < s // expected-error{{'<' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a10 = nsString <= s // expected-error{{'<=' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a11 = nsString >= s // expected-error{{'>=' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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let a12 = nsString > s // expected-error{{'>' is unavailable: Comparing Swift.String and NSString is ambiguous}}
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}
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