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GroupBy pandas DataFrame and select most common value
...ns. I know that the only one value in the 3rd column is valid for every combination of the first two. To clean the data I have to group by data frame by first two columns and select most common value of the third column for each combination.
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Python: split a list based on a condition?
What's the best way, both aesthetically and from a performance perspective, to split a list of items into multiple lists based on a conditional? The equivalent of:
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Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)
...he quote :
data depends on the key [1NF], the whole key [2NF] and nothing but the key [3NF] .
6 Answers
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Named colors in matplotlib
What named colors are available in matplotlib for use in plots? I can find a list on the matplotlib documentation that claims that these are the only names:
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How can I get file extensions with JavaScript?
...ood information in wallacer's revised answer as well as VisioN's excellent breakdown
Edit: Just because this is the accepted answer; wallacer's answer is indeed much better:
return filename.split('.').pop();
My old answer:
return /[^.]+$/.exec(filename);
Should do it.
Edit: In response t...
How to print a int64_t type in C
C99 standard has integer types with bytes size like int64_t. I am using the following code:
6 Answers
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Git: cannot checkout branch - error: pathspec '…' did not match any file(s) known to git
I'm not sure why I'm unable to checkout a branch that I had worked on earlier. See the commands below (note: co is an alias for checkout ):
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Javascript - Open a given URL in a new tab by clicking a button
I would like to have a button that redirects to a given URL and opens in a new tab. How can this be done?
13 Answers
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Should an Enum start with a 0 or a 1?
...or this particular enum, the most common default value for the enum should be assigned the underlying value of zero.
Framework Design Guidelines / Designing Flag Enums:
❌ AVOID using flag enum values of zero unless the value represents "all flags are cleared" and is named appropriately, as p...
Ruby's ||= (or equals) in JavaScript?
I love Ruby's ||= mechanism. If a variable doesn't exist or is nil , then create it and set it equal to something:
6 Ans...