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How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly
... False
1 True
2 True
3 False
4 False
leading to the rather compact:
In [60]: df[pd.isnull(df).any(axis=1)]
Out[60]:
0 1 2
1 0 NaN 0
2 0 0 NaN
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How do I add files without dots in them (all extension-less files) to the gitignore file?
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You can try a combination similar to:
*
!/**/
!*.*
That gitignore exclusion rule (a negated pattern) should ignore all files, except the ones with an extension.
As mentioned below by Mad Physicist, the rule is:
It is not possible to r...
How to decompile a whole Jar file? [closed]
Does anyone know of a free decompiler that can decompile an entire Jar file instead of a single class? I have a problem with sub classes like name$1.class name$2.class name.class
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node.js, socket.io with SSL
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we do this. we goto https : // www.thebitcoinwheel.com and it still makes a request to http automatically, this is something with the socket.io code and is the point of the question.
– Beyond
Jul 6 '11 at 18:38
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'typeid' versus 'typeof' in C++
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C++ language has no such thing as typeof. You must be looking at some compiler-specific extension. If you are talking about GCC's typeof, then a similar feature is present in C++11 through the keyword decltype. Again, C++ has no such typeof keyword.
typeid is a C++ language operator which retu...
If vs. Switch Speed
...uivalent if-else-if statements (as e.g. descibed in this article ) due to compiler optimizations.
5 Answers
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How to vertically center a container in Bootstrap?
... edited May 23 '17 at 12:26
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answered Mar 5 '14 at 11:43
Hashem QolamiHashem ...
Transaction isolation levels relation with locks on table
...3 concurrent processes A, B and C. A starts a transaction, writes data and commit/rollback (depending on results). B just executes a SELECT statement to read data. C reads and updates data. All these process work on the same table T.
READ UNCOMMITTED - no lock on the table. You can read data in th...
Google Maps: How to create a custom InfoWindow?
...ter some hunting around, this seems to be the best option:
https://github.com/googlemaps/js-info-bubble/blob/gh-pages/examples/example.html
You can see a customised version of this InfoBubble that I used on Dive Seven, a website for online scuba dive logging. It looks like this:
There are so...