大约有 23,000 项符合查询结果(耗时:0.0582秒) [XML]

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How can I see the size of files and directories in linux? [closed]

... 564 Use ls command for files and du command for directories. Checking File Sizes ls -l filename ...
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What are the disadvantages of using persistent connection in PDO

...ned here. The same drawbacks exist using PDO as with any other PHP database interface that does persistent connections: if your script terminates unexpectedly in the middle of database operations, the next request that gets the left over connection will pick up where the dead script left off. T...
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Counting null and non-null values in a single query

... Rodrigue 3,32522 gold badges3434 silver badges4646 bronze badges answered Aug 13 '09 at 13:09 user155789user155789 ...
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Difference between Math.Floor() and Math.Truncate()

... 64 Math.Floor() rounds toward negative infinity Math.Truncate rounds up or down towards zero. F...
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Sort objects in ArrayList by date?

...ist when it's done or something like that? – user393964 May 8 '11 at 11:42 It modifiies myList. So its sorted when it ...
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Import Error: No module named numpy

...d. I have only one version of Python 3 installed on my Windows 7 ( sorry ) 64-bit system. 24 Answers ...
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Format a datetime into a string with milliseconds

... 64 With Python 3.6 you can use: from datetime import datetime datetime.utcnow().isoformat(sep=' '...
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'pip' is not recognized as an internal or external command

...system settings>advanced>environment variables. I am using Windows 8 64bit. Thanks! – Mohammed Jan 4 '15 at 17:19 1 ...
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How can I check which version of Angular I'm using?

...t something like this: angular-cli: 1.0.0-beta.24 node: 7.4.0 os: darwin x64 @angular/common: 2.4.3 @angular/compiler: 2.4.3 @angular/core: 2.4.3 @angular/forms: 2.4.3 @angular/http: 2.4.3 @angular/platform-browser: 2.4.3 @angular/platform-browser-dynamic: 2.4.3 @angular/router: 3.4.3 @angular/comp...
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Convert Year/Month/Day to Day of Year in Python

...want to present performance of different approaches, on Python 3.4, Linux x64. Excerpt from line profiler: Line # Hits Time Per Hit % Time Line Contents ============================================================== (...) 823 1508 11334 ...