[Issue 2157] [GSoC] mixin struct, function overload

d-bugmail at puremagic.com d-bugmail at puremagic.com
Sat Dec 17 18:12:08 PST 2011


http://d.puremagic.com/issues/show_bug.cgi?id=2157


Kenji Hara <k.hara.pg at gmail.com> changed:

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


--- Comment #3 from Kenji Hara <k.hara.pg at gmail.com> 2011-12-17 18:12:05 PST ---
This is not an issue.

http://d-programming-language.org/template-mixin.html
> Mixin Scope
> 
> The declarations in a mixin are ‘imported’ into the surrounding scope. If
> the name of a declaration in a mixin is the same as a declaration in the
> surrounding scope, the surrounding declaration overrides the mixin one:
                                                 ^^^^^^^^^

If you want to merge overloads, you can add alias declaration to do it.

template T() {
  int m_attr;
  const {int attr() {return m_attr;}}
}
struct S {
  mixin T t;
  void attr(int n) {m_attr = n;}
  alias t.attr attr;    // Merge overloads
}
int main() {
  const S s;
  int r;
  r = s.attr();
  return r;
}

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