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Random row selection in Pandas dataframe
..., and you should use .loc for label based indexing
– compguy24
Feb 27 '19 at 17:04
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How to count occurrences of a column value efficiently in SQL?
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Difference between / and /* in servlet mapping url pattern
...oked when the context root is requested. This is different from the <welcome-file> approach that it isn't invoked when any subfolder is requested. This is most likely the URL pattern you're actually looking for in case you want a "home page servlet". I only have to admit that I'd intuitively e...
How can I get current date in Android?
... Data class instead f the Calendar class. Should be quicker. stackoverflow.com/questions/368094/…
– cjayem13
Aug 31 '14 at 2:29
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Warning as error - How to rid these
...igure out how to get rid of errors that basically should not be halting my compile in Visual Studio 2010 and should not be show stoppers, or at least I will fix them later, but I don't want the compile to just error and halt on these kinds of problems.
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What is the >>>= operator in C?
...y a colleague as a puzzle, I cannot figure out how this C program actually compiles and runs. What is this >>>= operator and the strange 1P1 literal? I have tested in Clang and GCC. There are no warnings and the output is "???"
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jQuery changing style of HTML element
...lor: "#fff"}) - PS i hate double quotes but they are easier to see in this comment
– danday74
May 9 '19 at 1:36
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Join strings with a delimiter only if strings are not null or empty
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community wiki
5 revs, 2 users 98%georg
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Local variables in nested functions
...om the parent scope when executed, not when defined.
The function body is compiled, and the 'free' variables (not defined in the function itself by assignment), are verified, then bound as closure cells to the function, with the code using an index to reference each cell. pet_function thus has one ...