CCNA, CCNP, MCSA, CCNA Final Exam, All Answer Test Module With 100/100

Someone on JSPerf dropped an amazingly fast implementation for checking leap years of the ISO calendar (link: Odd bit manipulations ):

How can I use Objective-C to programmatically create an iCal event in the default calendar? I want to check whether the event already exists and set the button state accordingly.

I am looking to synchronize a google calendar into my in app calendar but I don't have any idea of how to do this. The idea is that the synchronized calendar could be seen by any user that has this app. Thanks

Good Day to you. I have used iCal events in my app. I have add events to iCal and retrieve/delete the events from iCal from my sample iPhone app. Now, i want to show all the calendars what are the calendars user synced in their iPhone(Eg : Google calendar). Then i want to retrieve the events from other calendars except iCal. How can i get all the synced calendars from iPhone? I searched my level best in Google but, can't to get right answer. Can you please help me? Thanks in advance.