Dr. Alex Blewitt has over 20 years of experience in Objective-C and has been using Apple frameworks since NeXTSTEP 3.0. He upgraded his NeXTstation for a TiBook when Apple released Mac OS X in 2001 and has been developing on it ever since. He is the author of the recently published Swift Essentials. Alex currently works for a financial company in London and writes for the online technology news site InfoQ, as well as other books for Packt Publishing. He also has a number of apps on the App Store through Bandlem Limited. When he's not working on technology and the weather is nice, he likes to go flying. For more of Alex’s writing, you can find him on his blog, alblue.bandlem.com, as well as Twitter, @alblue.