IOS / Time and Date Stamp

At some point, it would be useful to understand how Swift can generate DATE and TIME data for you. Especially when taking a snapshot or screenshot on the fly and wanting to save the file.

Quick browsing leads me to this:

http://www.globalnerdy.com/2015/01/26/how-to-work-with-dates-and-times-in-swift-part-one/

https://stackoverflow.com/questions/28016578/swift-how-to-create-a-date-time-stamp-and-format-as-iso-8601-rfc-3339-utc-tim

Just like MacOS does SCREENSHOT Cmd+Shift+3, this will become handy.

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