大约有 800 项符合查询结果（耗时：0.0168秒） [XML]
Get folder name from full file path
...red Mar 8 '11 at 6:53
Øyvind BråthenØyvind Bråthen
52.2k2525 gold badges113113 silver badges138138 bronze badges
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Creating a zero-filled pandas data frame
...index=orig_df.index, columns=orig_df.columns)
10000 loops, best of 3: 60.2 µs per loop
Compare to:
In [4]: %timeit d = pd.DataFrame(0, index = np.arange(10), columns=columns)
10000 loops, best of 3: 110 µs per loop
In [5]: temp = np.zeros((10, 10))
In [6]: %timeit d = pd.DataFrame(temp, column...
Get the (last part of) current directory name in C#
...ot exactly what the question was about.
– Jakob Möllås
May 16 '11 at 13:47
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How to implement classic sorting algorithms in modern C++?
...on sort does not adapt to the data in any way, so its runtime is always O(N²). However, selection sort has the property of minimizing the number of swaps. In applications where the cost of swapping items is high, selection sort very well may be the algorithm of choice.
To implement it using the St...
Calculate distance between two latitude-longitude points? (Haversine formula)
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@Forte_201092: Because that is not necessary - as (sin(x))² equals (sin(-x))²
– Jean Hominal
May 30 '14 at 9:16
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Generate 'n' unique random numbers within a range [duplicate]
...e whole range. For example: %timeit random.sample(xrange(10000), 3) = 4.92 µs per loop, %timeit random.sample(range(10000), 3) = 126 µs per loop
– gaborous
May 16 '15 at 19:51
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Can I force pip to reinstall the current version?
I've come across situations where a current version of a package seems not to be working and requires reinstallation. But pip install -U won't touch a package that is already up-to-date. I see how to force a reinstallation by first uninstalling (with pip uninstall ) and then installing, but is th...
__getattr__ on a module
... answered Mar 15 '10 at 13:24
Håvard SHåvard S
20.4k55 gold badges5555 silver badges6767 bronze badges
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Git merge two local branches
... git checkout branch-A is more understandable
– Erdinç Çorbacı
Mar 22 '18 at 8:34
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What is the best collation to use for MySQL with PHP? [closed]
I'm wondering if there is a "best" choice for collation in MySQL for a general website where you aren't 100% sure of what will be entered? I understand that all the encodings should be the same, such as MySQL, Apache, the HTML and anything inside PHP.
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