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python pandas dataframe to dictionary
...can use it like this:
df.set_index('id').to_dict()
And if you have only one column, to avoid the column name is also a level in the dict (actually, in this case you use the Series.to_dict()):
df.set_index('id')['value'].to_dict()
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How can I use numpy.correlate to do autocorrelation?
...(x,x,mode='same'); {>>> array([11, 13, 19, 13, 11])}. The correct one is: np.correlate(x,x,mode='full')[len(x)-1:]; {>>> array([19, 13, 11, 5, 2])} see the first item is the largest one.
– Developer
Jan 1 '12 at 8:52
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Bootstrap combining rows (rowspan)
...within a column but I cannot locate
the capability of combining rows into one and have it aligned with column next to the uncombined rows.
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month name to month number and vice versa in python
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This one is better than mine above
– Gi0rgi0s
Aug 13 '19 at 15:30
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How does Duff's device work?
... at the do so much. Instead, look at the switch and the while as old-fashioned computed GOTO statments or assembler jmp statements with an offset. The switch does some math and then jmps to the right place. The while does a boolean check and then blindly jmps to right about where the do was.
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What is the difference between \r and \n?
...the print head back to the start of the line, and \n advanced the paper by one line. Both were therefore necessary to start printing on the next line.
Obviously that's somewhat irrelevant now, although depending on the console you may still be able to use \r to move to the start of the line and ove...
Modify table: How to change 'Allow Nulls' attribute from not null to allow null
How to change one attribute in a table using T-SQL to allow nulls (not null --> null)? Alter table maybe?
8 Answers
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400 vs 422 response to POST of data
...ntains well-formed (i.e., syntactically correct), but
semantically erroneous, XML instructions.
(Replace "XML" with "JSON" and I think we can agree that's your situation)
Now, some will object that RFC 4918 is about "HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV)" and ...
How to get all selected values from ?
Seemed odd I couldn't find this one already asked, but here it goes!
13 Answers
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jQuery multiple events to trigger the same function
... keyup , keypress , blur , and change events call the same function in one line or do I have to do them separately?
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