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how to create a file name with the current date & time in python?
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@rwbyrd That is odd, I just tried those exact 3 lines (copy-paste) with Python 3.4.1 and 2.7.6 and it works - though with Python 3 you need to use print(timestr). Did you copy this text from above? Perhaps a typo otherwise?
– Levon
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从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...也没有考虑重叠数对结果的影响，同样地，Mahout通过增加一个枚举类型（Weighting）的参数来使得重叠数也成为计算相似度的影响因子。
PearsonCorrelationSimilarity: 皮尔森相似度
原理：用来反映两个变量线性相关程度的统计量
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How to make zsh run as a login shell on Mac OS X (in iTerm)?
When zsh is set as a login shell on Mac OS X, when it is started by iTerm, zsh doesn't consider that it's being run as a login shell, although it's started as ‘-zsh’ (‘-’ is put as the first character of arg[0]) which is supposed to mean that it should start as a login shell.
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那些曾被追捧的90后创业男神女神，还好吗？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...来最年轻的一位，哈佛大学大四休学回国创业。
做的是一个叫做‘云视链’的产品，按照官方介绍来说，它最大的价值在于将视频单向内容输出变为双向互动的形式。
看起来好炫酷，小弟也研究了一下这个功能到底是怎...
How do I build a graphical user interface in C++? [closed]
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Essentially, an operating system's windowing system exposes some API calls that you can perform to do jobs like create a window, or put a button on the window. Basically, you get a suite of header files and you can call functions in those imported libraries, just like you'd do wi...
CPU Privilege Rings: Why rings 1 and 2 aren't used?
...iminished greatly.
The intent by Intel in having rings 1 and 2 is for the OS to put device drivers at that level, so they are privileged, but somewhat separated from the rest of the kernel code.
Rings 1 and 2 are in a way, "mostly" privileged. They can access supervisor pages, but if they attempt ...
Compiling simple Hello World program on OS X via command line
I've got a simple hello world example that I'm trying to compile on OS X, named hw.cpp :
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Benchmarking (python vs. c++ using BLAS) and (numpy)
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So what did the original poster do wrong? I wish he had commented on this post. Does he confirm that Numpy is as fast as C++?
– wmac
Jul 28 '15 at 10:50
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Is there a simple way to convert C++ enum to string?
Suppose we have some named enums:
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Pretty-print C++ STL containers
Please take note of the updates at the end of this post.
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