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having trouble with this. i need to come up with a logic code.
How do i, given 2 set of times. subtract one from the other and change it all to seconds.
Lets say i have ’12:00:00′ and ’15:00:00′
Now i want to subtract 12:00:00 from 15:00:00 so the result will be 03:00:00. Then change it all to seconds so that will be 10800 seconds
i already have two sets of time in an NSString after being Formatted with a NSDateFormatter
This is what you need to look for : NSDate -(NSTimeInterval)timeIntervalSinceDate
Convert your string to an NSDate and call this method [thisDate timeIntervalSinceDate:thatDate] will return you an NSTimeInterval, type double