大约有 45,000 项符合查询结果(耗时:0.0629秒) [XML]

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What are the advantages of NumPy over regular Python lists?

... single-precision floats in the cells would fit in 4 MB. Access in reading and writing items is also faster with NumPy. Maybe you don't care that much for just a million cells, but you definitely would for a billion cells -- neither approach would fit in a 32-bit architecture, but with 64-bit build...
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How to show line number when executing bash script

I have a test script which has a lot of commands and will generate lots of output, I use set -x or set -v and set -e , so the script would stop when error occurs. However, it's still rather difficult for me to locate which line did the execution stop in order to locate the problem. Is there a m...
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Moving matplotlib legend outside of the axis makes it cutoff by the figure box

... np.cos(x), label='Cosine') ax.plot(x, np.arctan(x), label='Inverse tan') handles, labels = ax.get_legend_handles_labels() lgd = ax.legend(handles, labels, loc='upper center', bbox_to_anchor=(0.5,-0.1)) text = ax.text(-0.2,1.05, "Aribitrary text", transform=ax.transAxes) ax.set_title("Trigonometry")...
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MySQL - Get row number on select

Can I run a select statement and get the row number if the items are sorted? 5 Answers ...
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What to use as an initial version? [closed]

...ersion 1.0.0. As soon as I have some stuff together, I release it as 1.0.0 and move on with 1.1.0. 12 Answers ...
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How do I change the background color of a plot made with ggplot2

... See here for more theme details Quick reference sheet for legends, axes and themes. share | improve this answer | follow | ...
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Should struct definitions go in .h or .c file?

I've seen both full definitions of struct s in headers and just declarations—is there any advantage to one method over the other? ...
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What do the f and t commands do in Vim?

Can somebody explain to me what the f and t commands do in vim and exactly how they work? I can't seem to find this information but people keep telling me that they are very useful. Would really appreciate an answer with an example if possible, thanks! ...
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How can I increment a char?

I'm new to Python, coming from Java and C. How can I increment a char? In Java or C, chars and ints are practically interchangeable, and in certain loops, it's very useful to me to be able to do increment chars, and index arrays by chars. ...
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.rar, .zip files MIME Type

I'm developing a simple php upload script, and users can upload only ZIP and RAR files. 6 Answers ...