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Incrementing in C++ - When to use x++ or ++x?

I'm currently learning C++ and I've learned about the incrementation a while ago. I know that you can use "++x" to make the incrementation before and "x++" to do it after. ...
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pandas three-way joining multiple dataframes on columns

I have 3 CSV files. Each has the first column as the (string) names of people, while all the other columns in each dataframe are attributes of that person. ...
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Utilizing multi core for tar+gzip/bzip compression/decompression

I normally compress using tar zcvf and decompress using tar zxvf (using gzip due to habit). 6 Answers ...
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How can I count the occurrences of a list item?

Given an item, how can I count its occurrences in a list in Python? 25 Answers 25 ...
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Check if a user has scrolled to the bottom

I'm making a pagination system (sort of like Facebook) where the content loads when the user scrolls to the bottom. I imagine the best way to do that is to find when the user is at the bottom of the page and run an ajax query to load more posts. ...
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Executing Shell Scripts from the OS X Dock?

How do I set up a shell script to execute from the Mac OSX dock? It seems that simply creating a shortcut will open the file in my editor. Is there a flag I need to set somewhere to tell it to run instead of opening it for editing? ...
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How does free know how much to free?

In C programming, you can pass any kind of pointer you like as an argument to free, how does it know the size of the allocated memory to free? Whenever I pass a pointer to some function, I have to also pass the size (ie an array of 10 elements needs to receive 10 as a parameter to know the size of t...
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What is the max size of localStorage values?

Since localStorage (currently) only supports strings as values, and in order to do that the objects need to be stringified (stored as JSON-string) before they can be stored, is there a defined limitation regarding the length of the values. ...
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How to change context root of a dynamic web project in Eclipse?

I developed a dynamic web project in Eclipse. I can access the app through my browser using the following URL: 13 Answers...
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Do while loop in SQL Server 2008

Is there any method for implement do while loop in SQL server 2008? 5 Answers 5 ...