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Python: Convert timedelta to int in a dataframe
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You could do this, where td is your series of timedeltas. The division converts the nanosecond deltas into day deltas, and the conversion to int drops to whole days.
import numpy as np
(td / np.timedelta64(1, 'D')).astype(int)
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Convert a positive number to negative in C#
You can convert a negative number to positive like this:
22 Answers
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How do I convert from int to Long in Java?
I keep finding both on here and Google people having troubles going from long to int and not the other way around. Yet I'm sure I'm not the only one that has run into this scenario before going from int to Long .
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Lua string to int
How can I convert a string to an integer in Lua?
12 Answers
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Add padding on view programmatically
...e other way around: sizeInDp is actually the number of pixels you get when converting sizeInPx dps.
– friederbluemle
Oct 11 '13 at 3:27
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When is del useful in python?
...here may be others, but I know about this one off hand) when you are using sys.exc_info() to inspect an exception. This function returns a tuple, the type of exception that was raised, the message, and a traceback.
The first two values are usually sufficient to diagnose an error and act on it, b...
How can I use “sizeof” in a preprocessor macro?
...re 'sizeof'. But in principle size_t x = (sizeof(... instead does work as intended. You have to "use" the result, somehow. To allow for this to be called multiple times either inside a function or at global scope, something like extern char _BUILD_BUG_ON_ [ (sizeof(...) ]; can be used repeatedly (...
Why can't I use a list as a dict key in python?
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Why not just convert the list to a tuple? Why convert it to a string? If you use a tuple, it'll work correctly with classes that have a custom comparison method __eq__. But if you convert them to strings, everything is compared by its str...
How to convert an NSTimeInterval (seconds) into minutes
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The answer from Brian Ramsay is more convenient if you only want to convert to minutes.
If you want Cocoa API do it for you and convert your NSTimeInterval not only to minutes but also to days, months, week, etc,... I think this is a more generic approach
Use NSCalendar method:
(NSDateCompo...
How do I check if a number is a palindrome?
...ler problems. When I solved it in Haskell I did exactly what you suggest, convert the number to a String. It's then trivial to check that the string is a pallindrome. If it performs well enough, then why bother making it more complex? Being a pallindrome is a lexical property rather than a mathe...