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Add column with number of days between dates in DataFrame pandas

I want to subtract dates in 'A' from dates in 'B' and add a new column with the difference. 4 Answers ...
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Search for all files in project containing the text 'querystring' in Eclipse

I work in Dreamweaver and Eclipse when developing. I think Dreamweaver has a really nice search where you can search for text within all files of your current project. ...
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Using PropertyInfo to find out the property type

I want to dynamically parse an object tree to do some custom validation. The validation is not important as such, but I want to understand the PropertyInfo class better. ...
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Human readable javascripts in chrome developer tools

does anybody know whether Chrome Developer Tools can format javascripts into human readable form ? Some kind of beautifier would be handy. Let say that I'm using some JS library and I need to instantiate its object, so that I should know what to put into constructor. But searching through this huge ...
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How do I clone a GitHub wiki?

How do I clone my GitHub repository's wiki? I know it's saved as a separate Git repository, but I can't remember the path. ...
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Scala @ operator

What does Scala's @ operator do? 5 Answers 5 ...
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Skipping Iterations in Python

I have a loop going, but there is the possibility for exceptions to be raised inside the loop. This of course would stop my program all together. To prevent that I catch the exceptions and handle them. But then the rest of the iteration runs even though an exception occurred. Is there a keyword to u...
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How do I undo a checkout in git?

I just checked out an earlier commit from my local git repo. I haven't made any changes to it, I was just looking at it. Now I want to go back to my latest commit - how do I do that? ...
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Django removing object from ManyToMany relationship

How would I delete an object from a Many-to-Many relationship without removing the actual object? 3 Answers ...
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Should I use scipy.pi, numpy.pi, or math.pi?

In a project using SciPy and NumPy, should I use scipy.pi , numpy.pi , or math.pi ? 2 Answers ...