Evaluation order of index expressions

kinke via Digitalmars-d digitalmars-d at puremagic.com
Sun May 24 12:30:52 PDT 2015


<code>
import core.stdc.stdio;

static int[] _array = [ 0, 1, 2, 3 ];

int[] array() @property { printf("array()\n"); return _array; }
int   start() @property { printf("start()\n"); return 0; }
int   end()   @property { printf("end()\n");   return 1; }

void main()
{
     array[start..end] = 666;
     printf("---\n");
     array[start] = end;
}
</code>

<stdout>
array()
start()
end()
---
start()
array()
end()
</stdout>

So for the 2nd assignment's left-hand-side, the index is 
evaluated before evaluating the container! Please don't tell me 
that's by design. :>

[origin: 
https://github.com/D-Programming-Language/phobos/pull/3311]


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