iOS 8 Day by Day is a free book made of 39 short chapters highlighting the key features of iOS 8. Each chapter comes with an Xcode project demonstrating how to use the corresponding feature, either through a standalone app or a playground. The book is aimed at developers who already know the basics of iOS programming in Objective-C and Swift. InfoQ has interviewed book’s author Sam Davies.
Apple has made available Swift 1.2 with a developer release of Xcode 6.3. A number of improvements have been made to both the compilation speed and also performance of the compiled code. Read on to find out what else is new, and what steps need to be taken for migrating from earlier versions of Swift.
HipByte released RubyMotion 3, which for the first time supports Android and Apple's WatchKit. A new pricing model attempts to better satisfy the developers needs.
A critical security vulnerability affecting Git and Mercurial has been announced yesterday, making it possible for an attacker to execute arbitrary commands in the client machine. The vulnerability only affects clients running on OS X (HFS+) and Windows (NTFS, FAT). The Git core team has published new releases for all current versions of Git.
A major feature of RAD Studio XE7 is its Parallel Programming Library. XE7 brings task-based parallelism to a variety of platforms including Windows, OS X, iOS, and Android. Unlike Mono, this tool-chain offers fully native applications on all target platforms.
Core Data batch updates, introduced in iOS 8 and OS X Yosemite, aim at fixing a long-standing limitation of the Core Data stack, as developers had been asking for many years. Let's review the problem that batch updates solve, how they work, and an alternative to them involving a rethinking of data normalization strategy.
A remote exploit (CVE-2014-6271) has been in bash discovered that potentially affects any application that uses environment variables to pass data from unsanitised content, such as CGI scripts. After the release went public, other exploits were discovered (CVE-2014-7169). Official patches have been released to fix them. (Originally posted 24 September, updated 25, 26 and 29 September)
The recent vulnerabilities in the Bash shell initially stemmed from a remote execution exploit, which was patched and made available through responsible disclosure before being announced. However, since the initial release there have been other flaws detected which became zero day threats. What exactly was the problem with Shellshock, and is it truly fixed? InfoQ explains what happened.
Apple has announced that Swift 1.0 has reached GM status on iOS and developers can now start submitting apps that use Swift. The language will continue to evolve, say Apple, as it has done since its announcement at WWDC 2014 last June. This is a short summary of its evolution.
Xamarin now provides a single API for both Mac OS and iOS for 32-bit and/or 64-bit.
Google has open sourced Chrome PDF engine, which allows to view and print PDF files, and fill PDF forms. The announcement came earlier this month from Foxit Software, the original maker of Foxit PDF SDK, which Google chose as the base for its Chrome PDF engine. Formerly closed-source, Chrome PDF code is now hosted on Google Source as the PDFium open source project.
Performance is one of the benefits that Apple claims its new Swift programming language should bring to OS X and iOS developers, and being in beta hasn't prevented independent developers from running benchmarks and reporting their findings. Perhaps unsurprisingly these show that in some cases Swift performance is not yet satisfactory.
Apple introduction of Swift, a new programming language for the OS X and iOS platform, has sparked some interest from the developers' community. If you are interested in learning more about Swift, here you can find some useful online resources.
In order to support 64-bit iOS and OSX, Xamarin has to make some breaking changes to the way it implements the mapping between C# and Objective-C libraries. Rather than being mapped to 32-bit types, NSInteger and CGFloat are now mapped to the new platform-specific data types nint and nfloat.