Growable BinaryHeap: use w/Array?

[Magnus Lie Hetland]

Just wondering: If I want a growable binary heap (I'd be open to other 
priority queue structures, for that matter ;), is the standard way in D 
(w/Phobos) to combine std.container.BinaryHeap with 
std.container.Array? Any reason why BinaryHeap can't deal with ordinary 
dynamic array appending, or appender instances, for that matter? Or, to 
put the questions a bit differently: Is there a reason why std.array 
doesn't have an insertBack method (that BinaryHeap can use) either 
defined for dynamic arrays or for std.array.Appender?

Just trying to figure out what's what here :)
--
Magnus Lie Hetland
http://hetland.org