My recomended sites
Here is a short list of sites that I check on a daily basis. This is where I get my news and information about all that is going on in the interwebs.
» digg.com
Digg is a place for people to discover and share content from anywhere on the web.
DZone is a free link-sharing community for developers, anyone can submit new links to the incoming queue, members vote on upcoming links to determine what gets promoted.
Blog focusing on AJAX technologies and trends.
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So I am working on an app, like always, and it needed to generate a random number from 0-3 no problem I thought and just typed in random() % 3; thinking that would be fine. Well it kept returning the same exact sequence!!! So how is that at all random? After about a half of an hour I found arc4random(), switched it our for random and it works like a charm :)
This is one of those huge gotcha's for me, I assumed that random() would generate a random number but its pseudo random. The arc4random() uses a superior algorithm to rand. You don't even need to set a seed. So just a small note to anyone else so that they don't get tripped on why random() is generating the same number. Sure you could have approached this other ways like set a SEED but this seems to be the simplest approach.
