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Zip lists in Python
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When you zip() together three lists containing 20 elements each, the result has twenty elements. Each element is a three-tuple.
See for yourself:
In [1]: a = b = c = range(20)
In [2]: zip(a, b, c)
Out[2]:
[(0, 0, 0),
(1, 1, 1),
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(17, 17, 17),
(18, 18, 18...
Statistics: combinations in Python
...ersions of scipy). When exact is False, it uses the gammaln function to obtain good precision without taking much time. In the exact case it returns an arbitrary-precision integer, which might take a long time to compute.
sh...
How to get back to most recent version in Git?
... @Nathan: In git a branch is really mostly a movable pointer to a certain revision. So conceptually, you're sort of creating a branch, but not in the sense that git thinks of branches.
– DLH
Aug 24 '10 at 17:26
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What does collation mean?
... @Piskvor: aren't coordinates in your info pointing to a certain country using an alphabet with 42 letters, 15 of them having diacritics?
– Quassnoi
Dec 27 '10 at 13:07
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When should I use genetic algorithms as opposed to neural networks? [closed]
...e useful for recognizing patterns. They follow a simplistic model of the brain, and by changing a number of weights between them, attempt to predict outputs based on inputs.
They are two fundamentally different entities, but sometimes the problems they are capable of solving overlap.
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R command for setting working directory to source file location in Rstudio
I am working out some tutorials in R. Each R code is contained in a specific folder. There are data files and other files in there. I want to open the .r file and source it such that I do not have to change the working directory in Rstudio as shown below:
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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
...——比如你可以编写一个正则表达式，用来查找所有以0开头，后面跟着2-3个数字，然后是一个连字号“-”，最后是7或8位数字的字符串(像010-12345678或0376-7654321)。
入门
学习正则表达式的最好方法是从例子开始，理解例子之后...
Action bar navigation modes are deprecated in Android L
... the Google provided examples SlidingTabsBasic or SlidingTabsColors as explained in this Dev Bytes video.
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Horizontal ListView in Android?
...ith LayoutManager are fixed by google. code.google.com/p/android/issues/detail?id=74772
– Ponsuyambu Velladurai
Jun 15 '15 at 17:53
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How to configure git bash command line completion?
...d before, then the above steps will work.
– patapouf_ai
Oct 21 '16 at 13:46
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