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I am new at Programing and to Swift. I understand the basic syntax and how to do all the common things from reading Apple's "The Swift Programming Language". But I cannot find any good documentation with examples and beginner explanations on implementing iOS Background app refresh. I have tried many Swift tutorial websites, I've turned to Google, and even searched through Apple's own web documentation, and have so far haven't had success. How does one go about implementing Background app refresh in an iOS app (using Swift)?
It depends on the type of learner you are. There are plenty of valuable resources I can recommend you. To mention a few:
Swift Programming: The Big Nerd Ranch Guide (2nd Edition)
A book that contains well explained Swift concepts where authors reinforce what you learned throughout practice and challenges at the end of each chapter. Highly recommended.
Swift 3 Essential Training: The Basics
A course from Lynda.com with high reputation in which they explain professionally Swift concepts through examples. Personally recommended.
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I am looking for Pubnub alternatives in Codename One for real time communication. Are there available cn1libs for Pusher for example? If there is not one, is it possible to write a cn1lib using the existing Android and iOS libraries for Pusher?
I really like pubnub and it has a pretty generous free tier but these sort of discussions are discouraged on stackoverflow so I'll answer the question of "Is it possible to write a cn1lib using the existing Android/iOS libraries of an SDK?"
Yes. We even have a tutorial on doing this in the developer guide here. Steve also made some videos covering the subject here.
We have not explicitly tried our Ably realtime client libraries with Codename One, however they are built with portable Java and should therefore work. We are a very appealing alternative to PubNub and Pusher.
Matt, co-founder of Ably: simply better realtime
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Supposedly, the engine behind the iPhone's new Siri feature has been under development for several years (spawned from the CALO project). It is said that they even developed a new programming language specifically for it.
I can't find information about it anywhere. The only possible leads are academic papers, but I am not in an university network, so I don't have access to most of them.
Does anyone have any leads, examples, or even something vague as "it is similar to Prolog" or perhaps "it is a dialect of Lisp"?
In terms of the Siri work, the direct predecessor ( http://www.sri.com/about/siri-timeline.html), the Personalized Assistant that Learns (PAL) Program, did produce an "agent-based language/framework" SPARK (not to be confused with SPARK Ada). They have publicly available documentation on it http://www.ai.sri.com/~spark/, https://pal.sri.com/CALOfiles/cstore/PAL-publications/calo/2005/IntrotoSPARK.pdf, and http://www.ai.sri.com/pubs/files/1023.pdf (and an Eclipse plugin, apparently). This is very different from a general-purpose programming language. The "language" is more of a language in the sense that it models a specific formalism for planning and knowledge representation (think semantic web rather than programming language). The framework itself is hosted in Python and sometimes Java.
From this blog post:
Siri has developed a new programming language and GUI for the API web.
This is huge, although it’s too bad that it’s so early and so hidden.
There is a video in that blog post that shows the owner of the website interviewing two important figures from Siri, and they discuss what you asked about and much more.
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I would like to build a music bisualiser for the iphone. I have development experience but not on the iphone platform. Can anyone recommend any books worth buying to get started...?
You can refer Apple's Documentation to begin with.There are a lot of forums and blogs to refer from once you have started development and want to refer on a particular topic.
You can use "Head First iPhone Development" as the first book to begin with programming in iPhone.
Cheers
I started with this:
http://www.amazon.co.uk/Beginning-iPhone-Games-Development-Professionals/dp/1430225998/ref=sr_1_1?ie=UTF8&qid=1296645855&sr=1-1-spell
and this:
http://www.amazon.co.uk/Beginning-iPhone-Development-Exploring-SDK/dp/1430224592/ref=pd_bxgy_b_img_c
For books and video for beginners, take a look at this post, pay attention to the 1st and 2nd highest voted answers, Are there any better videos that the stanford iphone series?
I'm an experienced (30+ years) architect/developer/etc. (C,C++,windows, linux, wxWidgets), but I had absolutely no Cocoa, Mac, Iphone, Objective-C etc. experience, and I got started on iPhone programming with:
Beginning iPhone 3 Development:
Exploring the iPhone SDK by Dave Mark,
Jeff LaMarche
I really liked it. I repeatedly referred to it while developing my first few apps, and before I knew enough to use the Apple documentation effictively.
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Can anyone here recommend any good books for getting my head around Core animation?
I've been through the Apple docs and while I'm sure it's all there, I haven't been able to grok Core Animation yet... Is there an a good example I've missed? or some starting document I've overlooked?
If not are there any good books out there on Core Animation... the few hits I've gotten while looking on Amazon don't rate anything too high, mostly MacOSX little iphone.
Thanks in advance for any suggestions
In addition to the books suggested by Alex and nevan (of which I'd recommend Marcus Zarra and Matt Long's newer Core Animation book, given its greater quantity of iPhone coverage), I taught a class on iPhone Core Animation recently. The video for that class can found on iTunes U. My class notes, with detailed coverage of Core Animation, can be downloaded here (in VoodooPad format).
I also gave a presentation on Core Animation at the recent iPadDevCamp in Chicago, for which the slides and sample code can be found here.
Core Animation: Simplified Animation Techniques for Mac and iPhone Development explains it nicely.
I liked some of this Pragmatic Programmer book.
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What is, according to you, the most important topic (chapter) covered by the iPhone Developer Documentation?
Do you know another topic that is very important to you, yet rarely read by other developers?
I would like to print and read some important chapters, but I may forget something...
There are several core guides to important concepts. These include:
iOS Human Interface Guidelines
The Objective-C Programming Language
Cocoa Fundamentals Guide
Key-Value Coding Programming Guide
iPhone Development Guide
iPhone Application Programming Guide
View Controller Programming Guide for iOS
Core Data Programming Guide
Predicate Programming Guide
Core Animation Programming Guide
Quartz 2D Programming Guide
OpenGL ES Programming Guide for iPhone OS
Accessibility Programming Guide for iOS
In-App Purchase Programming Guide
Getting Started with Networking and Internet
Interface Builder User Guide
Instruments User Guide
Xcode Debugging Guide
Many of these point to additional references that you may also like to read.
Every beginning iPhone developer gets tripped up by the deployment process. I would print, memorize and feel comfortable with setting up profiles and such. Here are some more essential concepts
Memory Management
Saving your dsym for later debugging
Testing
Buttoning up leaks and profiling
Each of these concepts can be searched for on Stack Overflow for more information.