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Struts2 高危漏洞修复方案 (S2-016/S2-017)

近期Struts2被曝重要漏洞,此漏洞影响struts2.0-struts2.3所有版本,可直接导致服务器被远程控制从而引起数据泄漏,影响巨大,受影响站点以电商、银行、门户、政府居多.

作者: 最后更新时间: 2019/07/04 - 21:15
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The switch() statement isn't really evil, right?

In my current position, I work to optimize and parallelize codes that deal with genomic data, e.g., DNA, RNA, proteins, etc.

作者: Clay B. (Blackbelt) 最后更新时间: 2019/07/04 - 10:46
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Opinion: Matt's Top 10 Tech & Gaming Predictions for 2014

Out with 2013 and in with 2014!!!

So here are my top ten (10) predictions for technology and gaming related things in the coming new year.  I can hardly wait!

作者: 最后更新时间: 2018/12/28 - 12:33
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Null Pointer Dereferencing Causes Undefined Behavior

I have unintentionally raised a large debate recently concerning the question if it is legal in C/C++ to use the &P->m_foo expression with P being a null pointer.

作者: Andrey Karpov (Blackbelt) 最后更新时间: 2018/05/30 - 07:08
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The Last Line Effect

作者: Andrey Karpov (Blackbelt) 最后更新时间: 2018/05/30 - 07:00
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Core Challenge In Speeding Up Python, PHP, HHVM, Node.js...

A traditional compiler translates a high-level computer program into machine code for the CPU you want to run it on. An interpreted language translates a high-level language into the machine code for some imaginary CPU. For historical reasons, this imaginary CPU is called a "virtual machine" and its instructions are called "byte code." One advantage of this approach is development speed: creating...
作者: David S. (Blackbelt) 最后更新时间: 2019/07/04 - 20:00
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The JITter Conundrum - Just in Time for Your Traffic Jam

In interpreted languages, it just takes longer to get stuff done - I earlier gave the example where the Python source code a = b + c would result in a BINARY_ADD byte code which takes 78 machine instructions to do the add, but it's a single native ADD instruction if run in compiled language like C or C++. How can we speed this up? Or as the performance expert would say, how do I decrease...
作者: David S. (Blackbelt) 最后更新时间: 2019/07/04 - 20:00
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Advanced Computer Concepts for the (Not So) Common Chef: The Multi-core Industrial Kitchen

This is going to be a short blog as there is no new material to discuss, just a simple extension of the earlier blogs (see

作者: 最后更新时间: 2019/07/06 - 17:10