collision

问题 If I\'m using Long uuid = UUID.randomUUID().getMostSignificantBits() how likely is it to get a collision. It cuts off the least significant bits, so there is a possibility that you run into a collision, right? 回答1: According to the documentation, the static method UUID.randomUUID() generates a type 4 UUID. This means that six bits are used for some type information and the remaining 122 bits are assigned randomly. The six non-random bits are distributed with four in the most significant half

问题 One of the most important rules and best practices when writing a library, is putting all symbols of the library into a library specific namespace. C++ makes this easy, due to the namespace keyword. In C the usual approach is to prefix the identifiers with some library specific prefix. Rules of the C standard put some constraints on those (for safe compilation): A C compiler may look at only the first 8 characters of an identifier, so foobar2k_eggs and foobar2k_spam may be interpreted as the

问题 I am wanting to make a game that has each level loaded from an image. I want to draw up the whole level in Photoshop, and then set it as the background and allow the player to walk over it. I want another invisible image to go over top which will be black in all places that I want to collide with. The reason I don\'t want to use tiles, which are much easier with rectangle collision and such, is because there will be complex corners and not everything will be rectangle. Is this a good idea,