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Converting a column within pandas dataframe from int to string
... is not working. but df.column_name = df.column_name.astype(str) works. No idea why.
– Dmitry Konovalov
Mar 14 '18 at 1:43
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Avoiding instanceof in Java
...andle new types, just add more handle methods...
}
You can expand on the idea to generically handle subclasses and classes that implement certain interfaces.
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Ways to implement data versioning in MongoDB
...It is a Java library? Is it merely a way of thinking about the problem? No idea and no hints are given.
– ftrotter
Feb 6 '13 at 6:41
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Remove an entire column from a data.frame in R
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Great answer. Any idea on how to drop a column that contains a certain value in any of its rows (not in its column name as you proposed above)?
– Laura K
Jun 19 '19 at 11:13
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Using openssl to get the certificate from a server
...oticed my Openssl version is 'OpenSSL 0.9.8g 19 Oct 2007'. Do you have any ideas?
– nasty pasty
Oct 26 '11 at 2:07
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Django development IDE [closed]
...ay to go.
I recall NetBeans starting to get Python support, but I have no idea where that is right now. Lots of people rave about NetBeans 6, but in the Java world Eclipse still reigns as the king of the OSS IDEs.
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Using the “final” modifier whenever applicable in Java [closed]
...big hint to the compiler.
Enforcing Single-use Variables: I believe in the idea that each variable should have only one purpose in life. By giving each variable only one purpose, you reduce the time it takes to grok the purpose of that particular variable while debugging.
Allows for Optimization: I ...
How to make a variadic macro (variable number of arguments)
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#define PRINT if(0)print is not a good idea either because the calling code might have its own else-if for calling PRINT. Better is: #define PRINT if(true);else print
– bitc
Jun 16 '10 at 7:58
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How to document class attributes in Python? [closed]
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Yes, my initial idea was to just declare e.g. flight_speed = 691; flight_speed.__doc__ = "blah blah". I think this is what you're mentioning in your edit. Unfortunately, this doesn't work for instantiations of (most?) builtin types (like i...
Good or bad practice? Initializing objects in getter
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Short answer:
Using lazy initialization unconditionally is not a good idea. It has its places but one has to take into consideration the impacts this solution has.
Background and explanation:
Concrete implementation:
Let's first look at your concrete sample and why I consider its implementati...