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Why does range(start, end) not include end?
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Because it's more common to call range(0, 10) which returns [0,1,2,3,4,5,6,7,8,9] which contains...
Installing specific package versions with pip
I'm trying to install version 1.2.2 of the MySQL_python adaptor, using a fresh virtualenv created with the --no-site-packages option. The current version shown in PyPi is 1.2.3 . Is there a way to install the older version? I found an article stating that this should do it:
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Regular expression to match any character being repeated more than 10 times
...le regular expression to match the same character being repeated more than 10 or so times. So for example, if I have a document littered with horizontal lines:
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How to use R's ellipsis feature when writing your own function?
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115
I read answers and comments and I see that few things weren't mentioned:
data.frame uses lis...
How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method
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13 Answers
13
Active
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Assign multiple columns using := in data.table, by group
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162
This now works in v1.8.3 on R-Forge. Thanks for highlighting it!
x <- data.table(a = 1:3, ...
iTunes音乐搜索 · App Inventor 2 中文网
...本清空
Web客户端（数据通信）
Web客户端1
不用改
播放器（多媒体）
音频播放器1
不用改
再把 Screen1 的“水平对齐”也设成“居中：3”，整个界面就居中了。
最后两个是非可视...
Why does auto a=1; compile in C?
...d d; // actually unsigned int
which is still common in modern code.
C++11 reused the keyword, which few if any C++ programmers were using with the original meaning, for its type inference. This is mostly safe because the "everything is int" rule from C had already been dropped in C++98; the only...
What does this square bracket and parenthesis bracket notation mean [first1,last1)?
I have seen number ranges represented as [first1,last1) and [first2,last2) .
4 Answers
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