大约有 900 项符合查询结果(耗时:0.0155秒) [XML]

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Detect if a NumPy array contains at least one non-numeric value?

...) Out[5]: True In [6]: timeit isnan(a.max()) 10000 loops, best of 3: 66.3 µs per loop The treatment of nans in comparisons was not consistent in earlier versions. share | improve this answer ...
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Does have to be in the of an HTML document?

... The linked article has vanished into the link rot æther, so here's the latest available archived version: web.archive.org/web/20150525042412/http://bluerobot.com/web/css/… – Zachary Murray Jan 26 '16 at 22:02 ...
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What's the difference between ASCII and Unicode?

...quence, they didn't need to support accents or other marks such as á, ü, ç, ñ, etc. (aka diacritics). ASCII Extended Some clever people started using the 8th bit (the bit used for parity) to encode more characters to support their language (to support "é", in French, for example). Just using o...
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YYYY-MM-DD format date in shell script

... a more compact notation for the accepted answer. – Håvard Geithus Nov 16 '15 at 20:42 ...
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What's the best way to send a signal to all members of a process group?

...ll your own children, use pkill -TERM -P ${$}. – François Beausoleil Apr 10 '15 at 14:30 3 @Only...
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Will strlen be calculated multiple times if used in a loop condition?

... @Prætorian, good point on the zero length string. I didn't consider that case when I wrote my comment. Does C++ evaluate the i > 0 expression on initial loop entry? If it doesn't, then you're right, the zero length case will...
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Python memoising/deferred lookup property decorator

...I found this method to be 7.6 times faster than the selected answer. (2.45 µs / 322 ns) See ipython notebook – Dave Butler Feb 28 '14 at 19:49 1 ...
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Is it okay to use now?

... edited Oct 5 '11 at 20:55 µBio 10.2k66 gold badges3535 silver badges5555 bronze badges answered May 11 '10 at 20:03 ...
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How to use a class from one C# project with another C# project

...ect. Change the default name of the file to something like library.py or façade.java, etc. NOW the code recommendations to import libraries or using namespaces will work as described in the comments above and you don't have to change path statements or change solutions paths and solution names th...
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Most common C# bitwise operations on enums

...boxing, which accounts for this difference. But the cost is so trivial (0.4µs) that unless you're in a tight loop, I would take the more readable (and less likely buggy) declarative API call any day. – Drew Noakes Oct 15 '12 at 23:57 ...