A opIndexUnary quiz

[Era Scarecrow]

On Tuesday, 1 January 2013 at 21:19:04 UTC, monarch_dodra wrote:
> ==========================================
> Related: I fixed a similar bug in std.container.DList recently: 
> Can you spot the error?
>
> //----
> DList opOpassign(string op, Stuff)(Stuff rhs)  	
> if (op == "~" && is(Stuff == DList))
> //----
>
> The fact that it made it into the standard library is, IMO, a 
> tell tale sign of a big problem. A "smoking gun".

  I know it should be opOpAssign, but is easy to mess up...