Setting array length to 0 discards reserved allocation?

[ketmar via Digitalmars-d]

On Sun, 17 Aug 2014 10:32:51 +0300
ketmar via Digitalmars-d <digitalmars-d at puremagic.com> wrote:

sorry, i meant THIS code:
 
   void foo (int[] a) {
     a ~= 42;
   }
   ...
   int[] arr;
   arr ~= 666;
   foo(arr);
   assert(arr.length == 2 && arr[1] == 42);
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