flawed-concept

I'm have build an up php script to host large number of images upload by user, what is the best way to generate random numbers to image filenames so that in future there would be no filename conflict? Be it like Imageshack. Thanks. Keep a persistent list of all the previous numbers you've generated(in a database table or in a file) and check that a newly generated number is not amongst the ones on the list. If you find this to be prohibitively expensive, generate random numbers on a sufficient number of bits to guarantee a very low probability of collision. You can also use an incremental

HTML provides a standard maxlength attribute since version 4.01. Angular provides a ng-maxlength directive. The difference is that the standard approach doesn't allow entering more than max, while Angular's approach just generates a validation error. Why did they decide to include such a directive? It's not because of dynamic data binding of maxlength since the behaviour is inconsistent. It's not because of compatibility since it's available even in HTML 4.01. My only guess is that it's there to provide an alternative validation paradigm, but it sounds like over-engineering. KanhuP2012 Not

I'm designing a game. In the game, various game objects extend different interfaces (and one abstract class) depending on what they need to be doing, and are passed to handlers which take care of items with a specific interface at defined intervals (they actually spread all their work out in a neat sort of way to make sure input/video/etc is always processed). Anyway, some of these objects extend the abstract class Collider and are passed to a CollisionHandler. The Collider class and handler take care of everything technical involved in collision, and just ask that an object implement a