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What are the differences between a UIView and a CALayer?
...CALayer, which inherit from NSObject, mainly focus on rendering, animation etc.
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Python 3.x rounding behavior
...context for the Decimal module that does this for you implicitly. See the setcontext() function.
– kindall
May 31 '12 at 21:04
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What is difference between monolithic and micro kernel?
...t and some popular Linux distros have a Hurd port (Debian/Hurd, Arch Hurd, etc).
– beatgammit
Feb 2 '13 at 3:18
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Async/await vs BackgroundWorker
...on the thread only when the method is active. You can use Task.Run to move CPU-bound work to a background thread, but a background thread doesn't help with a process that's just waiting for results to become available.
The async-based approach to asynchronous programming is preferable to existing ap...
Error 908: Permission RECEIVE_SMS has been denied. - App Inventor 2 中...
...到错误908（权限接收短信）的讨论。一位用户遇到了这个问题，并询问是否有人知道如何解决。其他用户提供了一些可能的解决方案，包括检查应用程序权限设置、确保手机上的权限设置正确、重新编译应用程序等。有人建议检...
Naming conventions: “State” versus “Status” [closed]
...t dirty (therefore requiring saving), is it complete, is it pending input, etc
I hope that helps you in your decision.
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What does “dereferencing” a pointer mean?
...igher level libraries and applications, but code for OSes, device drivers, etc. may need to rely on behaviour left undefined by the C or C++ Standard, that is nevertheless well defined by their specific implementation or hardware.
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The point of test %eax %eax [duplicate]
... the operands (registers) as they are and just set/unset specific internal CPU flags like the zero-flag (ZF). You can think at the ZF as a true/false boolean flag that resides inside the CPU.
in this particular case, TEST instruction performs a bitwise logical AND, discards the actual result and s...
NSOperation vs Grand Central Dispatch
... answer. All the benefits of NSOperationQueue (dependencies, debugability, etc.) apply to block operations too.
– BJ Homer
Apr 30 '12 at 4:40
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What Computer Science concepts should I know? [closed]
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Basic programming (including recursion, file I/O, formatted output, loops etc)
Object oriented design (including design patterns etc). You should be able to produce sensible OO designs as well as understanding the concepts.
Scripting and regexes.
Data structures -- lists, sets, hashtables, trees, g...