80 lines
970 B
C#
80 lines
970 B
C#
using System;
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struct Foo
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{
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public int Value;
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public Foo (int value)
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{
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this.Value = value;
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}
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public static Foo operator - (Foo? f)
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{
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if (f.HasValue)
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return new Foo (-f.Value.Value);
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return new Foo (42);
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}
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}
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struct Bar
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{
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public int Value;
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public Bar (int value)
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{
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this.Value = value;
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}
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public static Bar? operator - (Bar? b)
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{
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if (b.HasValue)
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return new Bar (-b.Value.Value);
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return b;
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}
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}
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class Test
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{
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static Foo NegateFoo (Foo f)
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{
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return -f;
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}
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static Foo NegateFooNullable (Foo? f)
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{
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return -f;
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}
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static Bar? NegateBarNullable (Bar? b)
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{
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return -b;
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}
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static Bar? NegateBar (Bar b)
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{
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return -b;
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}
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public static int Main ()
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{
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if (NegateFooNullable (null).Value != 42)
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return 1;
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if (NegateFoo (new Foo (2)).Value != -2)
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return 2;
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if (NegateBarNullable (null) != null)
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return 3;
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if (NegateBar (new Bar (2)).Value.Value != -2)
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return 4;
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Console.WriteLine ("OK");
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return 0;
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}
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}
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