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get list of pandas dataframe columns based on data type
If I have a dataframe with the following columns:
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What happens to an open file handle on Linux if the pointed file gets moved or deleted
What happens to an open file handle on Linux if the pointed file meanwhile gets:
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Is there any advantage of using map over unordered_map in case of trivial keys?
A recent talk about unordered_map in C++ made me realize that I should use unordered_map for most cases where I used map before, because of the efficiency of lookup ( amortized O(1) vs. O(log n) ). Most times I use a map, I use either int or std::string as the key type; hence, I've got...
Find the most frequent number in a numpy vector
Suppose I have the following list in python:
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Nohup is not writing log to output file
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In Vim, how do I apply a macro to a set of lines?
I have a file with a bunch of lines. I have recorded a macro that performs an operation on a single line. I want to repeat that macro on all of the remaining lines in the file. Is there a quick way to do this?
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How to create a new language for use in Visual Studio
I want to write a new templating language, and I want Visual Studio to "support" it. What I need to know is:
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Is there any way to enforce typing on NSArray, NSMutableArray, etc.?
Can I make a NSMutableArray instance where all the elements are of type SomeClass ?
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Sorting an array of objects by property values
I've got the following objects using AJAX and stored them in an array:
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How do I UPDATE from a SELECT in SQL Server?
In SQL Server , it is possible to insert rows into a table with an INSERT.. SELECT statement:
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