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Python “extend” for a dictionary
...answered Feb 23 '09 at 11:01
Nick FortescueNick Fortescue
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Save and load MemoryStream to/from a file
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You may use MemoryStream.WriteTo or Stream.CopyTo (supported in framework version 4.5.2, 4.5.1, 4.5, 4) methods to write content of memory stream to another stream.
memoryStream.WriteTo(fileStream);
Update:
fileStream.CopyTo(memoryStream);
memoryStream.CopyTo(fileStream);
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Pandas groupby: How to get a union of strings
I have a dataframe like this:
8 Answers
8
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Combine Date and Time columns using python pandas
...4-06 01:00:00
dtype: datetime64[ns]
Note: surprisingly (for me), this works fine with NaNs being converted to NaT, but it is worth worrying that the conversion (perhaps using the raise argument).
share
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Append a dictionary to a dictionary [duplicate]
..., and I wish to 'append' one of them to the other. By that I mean that the key,values of the other dictionary should be made into the first dictionary. For example:
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Big-O for Eight Year Olds? [duplicate]
I'm asking more about what this means to my code. I understand the concepts mathematically, I just have a hard time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to p...
PostgreSQL “DESCRIBE TABLE”
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IMSoP
58k77 gold badges7373 silver badges116116 bronze badges
answered Sep 20 '08 at 20:50
Chris BunchChris B...
Best way to format integer as string with leading zeros? [duplicate]
I need to add leading zeros to integer to make a string with defined quantity of digits ($cnt).
What the best way to translate this simple function from PHP to Python:
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best way to preserve numpy arrays on disk
I am looking for a fast way to preserve large numpy arrays. I want to save them to the disk in a binary format, then read them back into memory relatively fastly. cPickle is not fast enough, unfortunately.
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NUnit vs. xUnit
...e latest NUnit version is v3.5 and xUnit.net is v2.1.
Both of the frameworks are awesome, and they both support parallel test running (in a different way though). NUnit has been around since 2002, it's widely used, well documented and has a large community, whereas xUnit.net is more modern, more TD...