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I have some studying to do...<br />
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Thanks.
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I am new to Objective-C and iPhone development, and was happy to learn that the new SDK included ARC and removed the need to clean up, like C++. But I am researching a project written &nbsp;by Apple in 2010 and see this use of a function called CFSTR().<br />
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NSArray *people = (NSArray *)ABAddressBookCopyPeopleW<wbr />ithName(ad<wbr />dressBook,<wbr /> CFSTR(&quot;Appleseed&quot;));<br />
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Do I need to use this still?<br />
<br />
Thanks.
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I am new to Objective-C and iPhone development, and was happy to learn that the new SDK included ARC and removed the need to clean up, like C++. But I am researching a project written  by Apple in 2010 and see this use of a function called CFSTR().

	NSArray *people = (NSArray *)ABAddressBookCopyPeopleWithName(addressBook, CFSTR("Appleseed"));

Do I need to use this still?

Thanks.

Is CFSTR() function still needed in world of Automatic Reference Counting?

iOS is a mobile operating system developed by Apple; it is a derivative of the Mac OS X desktop operating system, with which it shares many (but not all) common frameworks and other components. These include Cocoa Touch, the Mach/Darwin/XNU kernel and code from the Berkeley Software Distribution (BSD). Each iOS application runs in its own secure sandbox to prevent altering other applications, the operating system, or any other data.

Swift is a compiled programming language created for iOS, OS X, watchOS, tvOS and Linux development by Apple Inc. Swift is designed to work with Apple's Cocoa and Cocoa Touch frameworks and the large body of existing Objective-C code written for Apple products. Swift is intended to be more resilient to erroneous code ("safer") than Objective-C and also more concise. It is built with the LLVM compiler framework included in Xcode 6 and later and uses the Objective-C runtime, which allows C, Objective-C, C++ and Swift code to run within a single program. A second free implementation of Swift targets Microsoft's Common Language Infrastructure (a.k.a. .NET) and the Java/Android platform.

Swift Programming

The iPhone is a smartphone made by Apple Inc. It and the iPad, along with several other mobile devices from Apple, run on the iOS operating system, which has its own topic, as does the iPad for device-specific questions. Native iOS applications are written in Objective-C or in Swift using the Cocoa Touch frameworks or HTML5 compiled with the help of a package manager such as Adobe PhoneGap; a common IDE is Xcode.

iPhone

Objective-C is an object-oriented programming language that is a strict superset of C (any valid C code is equally valid Objective-C code), and it inherits its object-oriented capabilities from Smalltalk. All procedural syntax is identical to that of C, and all object-oriented syntax is an implementation of Smalltalk messaging. It is the main programming language used by Apple for OS-X and iOS and their respective APIs/ Objective-C inherits the syntax, primitive types, and flow control statements of C and adds syntax for defining classes and methods.