大约有 1,400 项符合查询结果（耗时：0.0170秒） [XML]
Favorite Visual Studio keyboard shortcuts [closed]
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95
votes
Ctrl+K, Ctrl+C Comment a block
Ctrl+K, Ctrl+U Uncomment the block
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returning in the middle of a using block
...edPar
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How to check certificate name and alias in keystore files?
...Reference, Display Data command, -list option)
– Eido95
Aug 24 '17 at 12:46
Access is denied ?!
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How to select the row with the maximum value in each group
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95
Here's a data.table solution:
require(data.table) ## 1.9.2
group <- as.data.table(group)
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How to run two jQuery animations simultaneously?
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Andreas GrechAndreas Grech
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Pipe to/from the clipboard in Bash script
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lhunathlhunath
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Drop rows with all zeros in pandas data frame
...: df[(df.sum(axis=1) != 0)]
Out[92]:
a b
1 0 1
2 1 0
3 1 1
In [95]: %timeit df[(df.sum(axis=1) != 0)]
1000 loops, best of 3: 495 µs per loop
In [96]: %timeit df[df.values.sum(axis=1) != 0]
1000 loops, best of 3: 217 µs per loop
On a larger dataset:
In [119]: bdf = pd.DataFrame(np.r...
Multiple commands in an alias for bash
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lhunathlhunath
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The identity used to sign the executable is no longer valid
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95
Try restarting XCode. It worked for me.
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How can I see the size of files and directories in linux? [closed]
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95
Use ls -s to list file size, or if you prefer ls -sh for human readable sizes.
For directories...