http://d.puremagic.com/issues/show_bug.cgi?id=3221

           Summary: Array extension methods require parentheses
           Product: D
           Version: 2.032
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: johnch_atms@hotmail.com


Free functions can be used as methods of an array if the first argument in the function definition is an array. For example:

  int indexOf(T)(T[] array, T value) {...}

  int[] ints = getInts();
  int i = ints.indexOf(2);

However, when the array argument is called without parameters, the expression fails to compile, as this example shows.

  string[] split(string s, string sep) { ... }

  class Person {

    string name_;

    string name() { return name_; }

  }

  auto person = getPerson();
  string[] firstAndLast = person.name.split(" ");

The above line will only compile if it is changed to:

  string[] firstAndList = person.name().split(" ");

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--- Comment #1 from johnch_atms@hotmail.com  2009-08-01 03:52:51 PDT ---
(In reply to comment #0)
> Free functions can be used as methods of an array if the first argument in the
> function definition is an array. For example:
>   int indexOf(T)(T[] array, T value) {...}
>   int[] ints = getInts();
>   int i = ints.indexOf(2);
> However, when the array argument is called without parameters, the expression
> fails to compile, as this example shows.
>   string[] split(string s, string sep) { ... }
>   class Person {
>     string name_;
>     string name() { return name_; }
>   }
>   auto person = getPerson();
>   string[] firstAndLast = person.name.split(" ");
> The above line will only compile if it is changed to:
>   string[] firstAndList = person.name().split(" ");

Oops, I meant to say: However, when the array argument is called without parentheses, the expression fails to compile...

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Witold Baryluk <baryluk@smp.if.uj.edu.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |baryluk@smp.if.uj.edu.pl


--- Comment #2 from Witold Baryluk <baryluk@smp.if.uj.edu.pl> 2010-02-05 06:22:09 PST ---
One should possibly add @property for such function, so it will be possible tu use such function not only as method but also as getter. Unfortunetly it isn't yet implemented.

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--- Comment #3 from Witold Baryluk <baryluk@smp.if.uj.edu.pl> 2010-02-05 06:24:01 PST ---
Similary to the bug3771

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yebblies <yebblies@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
                 CC|                            |yebblies@gmail.com
            Version|2.032                       |D1
            Summary|Array extension methods     |(D1 only) Can't use
                   |require parentheses         |property syntax with ufcs


--- Comment #4 from yebblies <yebblies@gmail.com> 2012-02-02 02:33:23 EST ---
Works in D2 (2.058)

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yebblies <yebblies@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE


--- Comment #5 from yebblies <yebblies@gmail.com> 2012-02-02 20:52:09 EST ---
*** This issue has been marked as a duplicate of issue 2883 ***

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