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What is the dependency inversion principle and why is it important?
... should depend upon abstractions.
Abstractions should never depend upon details. Details should depend upon abstractions.
As to why it is important, in short: changes are risky, and by depending on a concept instead of on an implementation, you reduce the need for change at call sites.
Effectivel...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
...ens often, then multiple locks would increase parallelism. At the cost of maintainability, since more locking means more debugging of the locking.
How efficient is it to lock a mutex? I.e. how much assembler instructions are there likely and how much time do they take (in the case that the mutex...
从Code Review 谈如何做技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，仔细想一下好多东西是可以框架化，模板化，或是自动生成的。所以，为了堆出这么多网页就停地去堆，做的东西是很多，但是没有任何成长。急功近利，也许，你做得多，拿到了不错的年终奖，但是你失去的也多，失去了成...
WinDbg基础资料（日本語） - IT优秀资料 - 清泛网 - 专注C/C++及内核技术
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Tip02:WinXP Dump生成の方法
http://www.glamenv-septzen.net/view/918
C:\kktools\userdump8.1\x86>userdump -p
userdump 1268
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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...
C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术
...实际的得到地址的运算为： [ebp+ecx+FFFFF7F0h+4h]，编译器在生成代码时会直接把最后一步运算做掉。
我们再看一个例子，这个例子的继承结构和上一篇中是一样的，也是菱形结构。不同的是，每一个类都重写了顶层类声明...
App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
... 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索
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).
...
Mozilla PDF.js：PDF在线预览 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...丽的成分/效果，如转换/屏蔽- 拼合透明度;
4.避免使用PDF生成器（或者不创造内容）产生无效的PDF输出（如LibreOffice中创建大量的微小的图像，矢量元素/图片）;
5.使用的网络优化格式的PDF;
6.修复或不产生不符合PDF32000规范的PDF...
快速理解 高频对冲套利自动交易（程式化交易） - 更多技术 - 清泛网 - 专注...
...，这方面，机器最擅长，不出错，速度还快（我指的是，生成应该要报的单的速度）。
而，那种，软件或某个指标发出买入或卖出信号，然后，人工去执行开仓、平仓，呵呵，恕我直言，这是“机器在玩人，不是人在玩机器...