As a very long time Obj-C guy, Swift looks great and Swift looks like the future. But if you need to learn Cocoa through existing resources (books, tutorials, forums) or use/read existing code (3rd party libraries, code snippets, header files), you will need to understand Obj-C too until enough time such that everything has switched over.

Curious about this myself. I recently begun learning Objective C past 2-3 week and am curious whether to abandon ship and move over to swift.

However I think that most Objective C learning material is still a good precursor for learning iOS in general and learning the structure of iOS apps.

Looking forward to hearing other answers.

Swift is built with Objective-C interoperability in mind. All of the Objective-C Foundation classes are available in Swift, and they've done their best to mitigate the differences in software design.

However, learning Swift without first learning how the underlying Objective-C libraries work, the design patterns, the available functions, Swift-Objective-C-Interop is going to be very difficult.

I'd recommend learning Swift and Objective-C at the same time. If you learn how to do something in Swift, learn how to do it in Objective-C. Objective-C isn't going anywhere, any time soon.

Due to the massive amounts of tutorials, Stack Overflow questions, libraries, projects, etc. all written in/about Objective C for iOS and OS X, I personally would not start anywhere else.

So here's the deal. Obj C will be around for awhile. I think that's pretty clear, but given that you know nothing, and Swift just came out and will more then likely be the way of the future, why NOT take advantage and start with Swift. That's just how I see it anyways.

If you have any plans to work on existing projects, especially in a freelance capacity, I would say definitely yes.

In fact the only scenario I'd say no is if your only plan is to build your own new apps from scratch.

I think it's still going to be valuable to know C, Objective-C as well as Swift for iOS development work for a good while to come.

Objective C is no more the Latin of programming languages than COBOL is. We'll be dealing with ObjC for years to come.

Learn c and/or c++ deeply. You can target apple with these yet still have freedom from apple. As well as some tricks that can't be done in the garbage collected world. Cross platform native apps to boot.

How can you use C++ to write cocoa apps?