On 1/15/15 12:53 PM, H. S. Teoh via Digitalmars-d wrote:
This issue is already latent in almost*all* Phobos algorithms. We only haven't discovered it yet because most people just use arrays for ranges. But all it takes is for somebody to start using std.range.inputRangeObject (and there are cases where this is necessary), and this problem will surface.
There's a distinction here. Input non-forward ranges can be considered "reference" because popFront()ing any copy is tantamount to popFront()int any other copy. -- Andrei
