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By mswatcher
Submitted: Sep 07 2013 / 14:13

Many web services choose to return dates in something other than a unix timestamp (unfortunately). Recently I set out trying to identify performance bottlenecks with a large import operation in our iOS app. Having tweaked most of the variables, I was surprised to find out that date parsing was actually one of the biggest bottlenecks. The date parsing was done using NSDateFormatter using an ISO-8601 formatted date that looked like this:
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