39 lines
801 B
ObjectPascal
39 lines
801 B
ObjectPascal
function operator implicit<T>(f: System.Func<T>): System.Action; extensionmethod;
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begin
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Result := procedure()->f();
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end;
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function operator implicit<T, TResult>(f: System.Func<T, TResult>): System.Func<TResult>; extensionmethod;
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begin
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Result := ()->f(default(T));
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end;
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function operator implicit<T>(f: System.Action): System.Func<T>; extensionmethod;
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begin
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Result := ()->begin f(); Result := default(T) end;
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end;
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var i: integer;
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function ff(): integer;
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begin
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i := 2;
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end;
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function ff2(j: integer): integer;
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begin
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i := 3;
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end;
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begin
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var fff: System.Func<integer> := ff;
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var a: System.Action := fff;
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a;
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assert(i=2);
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fff := a;
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assert(fff() = 0);
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var fff2: System.Func<integer, integer> := ff2;
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fff := fff2;
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fff();
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assert(i=3);
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end. |