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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...新的chunk上,并用单链表链接起来。如果free()的chunk恰好 与 top chunk 相邻,那么这两个 chunk 就会合并成新的 top chunk,如果top chunk大小大于某个阈值才还给操作系统。主分配区类似,不过通过sbrk()分配和调整top chunk的大小,只有heap...
How can we make xkcd style graphs?
... +
theme(text=element_text(size=16, family="xkcd"))
ggsave("xkcd_ggplot.pdf", plot=p, width=4, height=4)
## needed for Windows:
## Sys.setenv(R_GSCMD = "C:/Program Files/gs/gs9.05/bin/gswin32c.exe")
embed_fonts("xkcd_ggplot.pdf")
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Find running median from a stream of integers
....biz/2013/09/16/… and the paper that it refers to is here: arxiv.org/pdf/1407.1121v1.pdf This is called "Frugal Streaming"
– Paul Chernoch
Aug 24 '15 at 16:23
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程序员用数据思维教你如何追女生 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...一切更符合女生的心意。
5、修复缺陷从一开始就进行,持续让对方看到更新
程序员的臭毛病我们都有,这是我们的缺陷。(不要让我说有哪些!orz)
咳咳~所以你一旦有了喜欢的对象并开始进行追求,你的缺陷跟踪体系就要建...
Why is the String class declared final in Java?
...aoticjava.com/posts/gc-tips-and-memory-leaks/
http://java.sun.com/j2se/1.5/pdf/jdk50_ts_guide.pdf
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unsigned int vs. size_t
...9 standard, section 7.17, a draft of which is available on the Internet in pdf format, or in the C11 standard, section 7.19, also available as a pdf draft.
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What Every Programmer Should Know About Memory?
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The guide in PDF form is at https://www.akkadia.org/drepper/cpumemory.pdf.
It is still generally excellent and highly recommended (by me, and I think by other performance-tuning experts). It would be cool if Ulrich (or anyone else) wrot...
How to create circle with Bézier curves?
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@legends2k I use LaTeX with TikZ to generate a PDF that I convert to PNG then.
– Kpym
Jan 6 '16 at 23:00
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正则表达式 30 分钟入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...义
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零宽断言
负向零宽断言
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贪婪与懒惰
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30分钟内让你明白正则表达式是什么,并对它有...
创业者:在寻找 不迷茫 - 资讯 - 清泛网 - 专注C/C++及内核技术
...则,比如O2O的,连看都不看了,不会考虑项目本身有没有发展前景。”杨贝明说。
经历这一年,杨贝明深刻感受到了融资的不易。现在,摆在他面前的只有两条路,继续寻找资金,以及想办法养活团队。
“现在是我们最艰难...
