foreach ref very broken: fails to call front(val)

[Ali Çehreli]

On 07/10/2012 12:21 AM, kenji hara wrote:
 > There are two problems:
 >
 > 1. std.container.Array.(front, back, opIndex, ...) doesn't return its
 > elements by ref.

It's not that obvious to me. The following picture should supposedly 
provide references to elements:

The latter of the following pair of Array.Range.front() should be used 
in the foreach body:

         @property T front()
         {
             enforce(!empty);
             return _outer[_a];
         }

         @property void front(T value)
         {
             enforce(!empty);
             _outer[_a] = move(value);
         }

There, _outer is the Array itself. And Array.opIndexAssign() seems to be 
doing the right thing:

     void opIndexAssign(T value, size_t i)
     {
         enforce(_data.RefCounted.isInitialized);
         _data._payload[i] = value;
     }

Ali