"Dominic Jones" <dominic.jo...@qmul.ac.uk> wrote in message news:j89arh$2ua3$1...@digitalmars.com... >> Also an plain array is a good stack. :) > > I'd rather not use a plain array because (I assume) that when I push > or pop using arrays, a swap array is created to resize the original. > If this is not the case, then an array will certainly do. > -Dominic
The matter of using D's arrays as a LIFO is discussed the other branch of this thread (ie, you can do it, but it's slow because a "pop then push" will reallocate and copy), but as far as a FIFO: That may actually be reasonable to do as an array: Decreasing the length of an array (from either end) is a trivial matter that never allocates or copies. Appending to the end *usually* doesn't involve allocating. So the only issue I see it that the FIFO will "march" across memory. I guess that's probably not a problem as long as the GC knows it can reclaim the stuff you've popped off (Does it do that? Ie, if you do "x = x[10..$];" and there's no other references, is the GC smart enough to reclaim those first ten spots? I guess I would assume so.)