objective c - iOS 9, Swift 2.0 , Xcode and testing -

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i planning learn develop ios apps. i'll learning objective-c , develop actual apps ios.

now, launch of swift 2.0, objective-c apps still run on ios9 ? also, possible test run objective-c app on phone mentioned here ? https://developer.apple.com/xcode/ or facility available apps written in swift?

does swift allow me objective-c does?

any further advide or guidance should know before enrolling course appreciated me judge things better.

swift still second language. cocoa frameworks written in c or obj-c (maybe new ones in ios 9 written in swift).

the language in application written doesn't matter, code compiled same machine code, yes, obj-c apps continue run , many developers won't bother swift. apps have been written not have rewritten swift (with exceptions).

swift won't allow absolutely obj-c allow almost , code more robust, considering swift more modern language stronger typing obj-c. if beginner, won't find problematic use case.


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