I am working with the pandas library and I want to add two new columns to a dataframe df with n columns (n > 0). These new columns result from the application of a function to one of the columns in the dataframe. ...

I would like to create a very simple C application that does an HTTP post. It will take a few parameters, and use these to construct a URL. I'd just like to do a simple HTTP POST and get the response without the use of curl (the libraries are not and will not be installed on the machine this needs...

How does zip(*[iter(s)]*n) work? What would it look like if it was written with more verbose code? 6 Answers ...

I've long been under the impression that goto should never be used if possible. While perusing libavcodec (which is written in C) the other day, I noticed multiple uses of it. Is it ever advantageous to use goto in a language that supports loops and functions? If so, why? ...

How can I find the number of cores available to my application from within Java code? 4 Answers ...

I am using Ruby on Rails 3.2.2 and I would like to know if the following is a "proper"/"correct"/"sure" way to override a setter method for a my class attribute. ...

I have a pandas Series object containing boolean values. How can I get a series containing the logical NOT of each value? ...

I want to find a bash command that will let me grep every file in a directory and write the output of that grep to a separate file. My guess would have been to do something like this ...

What response code should be passed to client in case of following scenarios? 4 Answers ...

I have a dataframe with ~300K rows and ~40 columns. I want to find out if any rows contain null values - and put these 'null'-rows into a separate dataframe so that I could explore them easily. ...