Min-Heap and Hash Table help

[Chris Pons]

I'm still having troubles with the min-heap.

Node[] a;
auto b = BinaryHeap!"a.fScore > b.fScore"( a[] );


Error	1	Error: template instance BinaryHeap!("a.fScore >
b.fScore") BinaryHeap!("a.fScore > b.fScore") does not match
template declaration BinaryHeap(Store,alias less = "a < b") if
(isRandomAccessRange!(Store) ||
isRandomAccessRange!(typeof(Store.init[])))	C:\Users\CP\Documents\Visual
Studio 2010\Projects\D\STDS\NPC.d	252