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MQTT物联网协议完全实践指南 · App Inventor 2 中文网
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Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...coming in the imminent 2.8 release. Those familiar with the library from 2.7 will notice that the library, from a usage perspective, has changed little. For example...
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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
...m what I can say with my puny test cases, you are 82% mainstream
clang 2.7@x86_64-suse-linux
We like to think that:
..05 int has the size of pointers
but 'sizeof(int)==sizeof(void*)' is false.
..08 overshifting is okay
but '(1<<bits_per_int)==0' is false.
..09a minus shifts backwards
but ...
What's the difference between utf8_general_ci and utf8_unicode_ci?
..., utf8 is a flawed UTF-8 implementation from early MySQL versions which remains only for backward compatibility. The fixed version was given the name utf8mb4.
Note: Newer versions of MySQL have updated Unicode sorting rules, available under names such as utf8mb4_0900_ai_ci for equivalent rules based...
App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
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App Inventor 2 低功耗蓝牙 BlueToothLE ...
Algorithm to compare two images
...the copy may do stuff like rotating, making negative, or adding trivial details (as well as changing the dimension of the image).
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深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...s 7 x64 系统上全部都使用 interrupt gate 并没有使用 trap gate
2.7 使用 trap gate
trap gate 在结构上与 interrupt gate 是完全一样的，参见节 2.6 的那图，trap gate 与 interrupt gate 不同的一点是：使用 trap gate 的，processor 进入 interrupt handler 前并...
How to decide between MonoTouch and Objective-C? [closed]
...I have a decent little app going that, once compressed, gets down to about 2.7 MB (when submitting your app for distribution, you zip it - when apps are downloaded from the store, they're zipped - so when figuring out if your app is going to come in under the 10MB OTA limit, zip the sucker first - y...
Python str vs unicode types
Working with Python 2.7, I'm wondering what real advantage there is in using the type unicode instead of str , as both of them seem to be able to hold Unicode strings. Is there any special reason apart from being able to set Unicode codes in unicode strings using the escape char \ ?:
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UnicodeDecodeError when redirecting to file
...In fact, you can check what encoding the terminal expects:
% python
Python 2.7.6 (default, Nov 15 2013, 15:20:37)
[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.2.79)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> print sys.st...