大约有 43,124 项符合查询结果(耗时:0.0525秒) [XML]

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How do I convert a pandas Series or index to a Numpy array? [duplicate]

... To get a NumPy array, you should use the values attribute: In [1]: df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]}, index=['a', 'b', 'c']); df A B a 1 4 b 2 5 c 3 6 In [2]: df.index.values Out[2]: array(['a', 'b', 'c'], dtype=object) This accesses how the data is already ...
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Generic List - moving an item within the list

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How to clone git repository with specific revision/changeset?

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Ruby ampersand colon shortcut [duplicate]

...foo } something(&:foo) Also, to_proc on Symbol is implemented in Ruby 1.8.7 and 1.9, so it is in fact a "ruby thing". So, to sum up: & calls to_proc on the object and passes it as a block to the method, and Ruby implements to_proc on Symbol. ...
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Replace X-axis with own values

... 179 Not sure if it's what you mean, but you can do this: plot(1:10, xaxt = "n", xlab='Some Letter...
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Get first and last date of current month with JavaScript or jQuery [duplicate]

...= new Date(); var firstDay = new Date(date.getFullYear(), date.getMonth(), 1); var lastDay = new Date(date.getFullYear(), date.getMonth() + 1, 0); or you might prefer: var date = new Date(), y = date.getFullYear(), m = date.getMonth(); var firstDay = new Date(y, m, 1); var lastDay = new Date(y, m...
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How to get a list of all valid IP addresses in a local network? [closed]

... 410 Install nmap, sudo apt-get install nmap then nmap -sP 192.168.1.* or more commonly nmap ...
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C++ convert from 1 char to string? [closed]

I need to cast only 1 char to string . The opposite way is pretty simple like str[0] . 2 Answers ...
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check / uncheck checkbox using jquery? [duplicate]

... 1277 For jQuery 1.6+ : .attr() is deprecated for properties; use the new .prop() function instea...
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c++提取复数的实部和虚部 - C/C++ - 清泛网 - 专注C/C++及内核技术

...p, 0, sizeof(COMPLEX)); char buf[MAX_BUF_LEN]; int signPos = -1, // +/-号位置 iPos = -1; // 结尾的i的位置 for (int i = len-1; i >-1; i--) { if ('i' == strCplx[i]) iPos = i; else if ('+' == strCplx[i] || '-' == strCplx[...