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Passing Data between View Controllers
...Communicate With Other View Controllers in the View Controller Programming Guide
Delegate Pattern
NSNotification center
It's another way to pass data.
// add observer in controller(s) where you want to receive data
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleD...
Use 'import module' or 'from module import'?
I've tried to find a comprehensive guide on whether it is best to use import module or from module import . I've just started with Python and I'm trying to start off with best practices in mind.
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2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...，一些重量级的书可以参考。Hadoop 最经典的the definitive guide， 我在知乎上也有分享有什么关于 Spark 的书推荐？ – 董飞的回答
其次是选择目标，如果你像做数据科学家，我可以推荐coursera的data science课程，通俗易懂Coursera &nd...
What is the meaning of single and double underscore before an object name?
...10 # 10
print number - 20 # 40
For more details, see the PEP-8 guide. For more magic methods, see this PDF.
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What's the difference between a proc and a lambda in Ruby?
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A helpful post on ruby guides: blocks, procs & lambdas
Procs return from the current method, while lambdas return from the lambda itself.
Procs don’t care about the correct number of arguments, while lambdas will raise an exception.
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When to use ' (or quote) in Lisp?
...ur Lisp journey, you'll start using packages too. Ron Garret's The Idiot's Guide to Common Lisp Packages will give you good explanation of those.
Happy hacking!
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What exactly does Perl's “bless” do?
...subroutine or TYPEGLOB (see the book Object Oriented Perl: A Comprehensive Guide to Concepts and Programming Techniques by Damian Conway for useful examples) or even a reference to a file or directory handle (least common case).
The effect bless-ing has is that it allows you to apply special syntax...
Why does Windows64 use a different calling convention from all other OSes on x86-64?
...si as argument registers. But the numerical value of the first eight could guide you if you're designing an ABI from scratch, but there's no reason to change them if a perfectly fine ABI already exists, that only leads to more confusion.
– JanKanis
Dec 14 '10 a...
NVIDIA vs AMD: GPGPU performance
...nd elsewhere, and very useful documents like the developers' best practice guide, etc. The availability of free devel tools - the profiler, the cuda-gdb, etc - overwhelmingly tilts NVIDIAs way.
(Editor: the information in this paragraph is no longer accurate.) And some of the difference is also ha...
Adding Core Data to existing iPhone project
...hanges; consult "Core Data Model Versioning and Data Migration Programming Guide" for details.
*/
//println("Unresolved error \(error), \(error.userInfo)")
abort()
}
}
return _persistentStoreCoordinator!
}
var _persistentStoreCoordinator: NSPersist...