A pre-order is an order placed for an item that has not yet been released. The idea for pre-orders came because people found it hard to get popular items...

are three common ways to traverse them in depth-first order: in-order, pre-order and post-order. Beyond these basic traversals, various more complex or...

this preorder is even a partial order (called the specialization order). On the other hand, for T1 spaces the order becomes trivial and is of little...

field of computer science, a pre-topological order or pre-topological ordering of a directed graph is a linear ordering of its vertices such that if there...

tree traversal, which visits each node twice, assigning numbers in the order of visiting, and at both visits. This leaves two numbers for each node,...

to those that pre-ordered the game through various vendors; these songs were otherwise available at cost to other players. A pre-order from Amazon included...

November 22, 2011, and contains the Robin pre-order content. A Skins pack containing all of the alternate Batman pre-order skins was released on December 6, 2011...

deleted, though with a rearrangement of the tree structure. Pre-order, in-order, and post-order traversal visit each node in a tree by recursively visiting...

originally as a pre-order bonus, available to people who pre-order the game. The code would be supplied by retailers upon pre-order of the game, and...

as pre-order bonuses for the Standard Edition of Killzone 3 from select retailers in North America. Europe and Australia did not receive pre-order bonuses...