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Get statistics for each group (such as count, mean, etc) using pandas GroupBy?

I have a data frame df and I use several columns from it to groupby : 7 Answers 7 ...
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Java: Get last element after split

I am using the String split method and I want to have the last element. The size of the Array can change. 12 Answers ...
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Cocoapods setup stuck on pod setup command on terminal

...after waiting for couple of hours, however still trying to figure-out what may be the problem is? I would very much appreciate your comments and suggestions. Thank you!!! ...
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Microsecond timing in JavaScript

Are there any timing functions in JavaScript with microsecond resolution? 4 Answers 4 ...
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Optimise PostgreSQL for fast testing

I am switching to PostgreSQL from SQLite for a typical Rails application. 2 Answers 2 ...
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Eclipse Workspaces: What for and why?

...ought of different ways of using workspaces (per project, per application (multi-asseted or not), per program language, per target (web-development, plugins,..), and so on) and I am still doubting what the best approach is. ...
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SVN: Ignore some directories recursively

I don't want any directory named build or dist to go into my SVN no matter how deep in the tree it is. 15 Answers ...
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How do I use vimdiff to resolve a git merge conflict?

I just merged a branch into my master in git and I got Automatic merge failed; fix conflicts and then commit the result. Now I ran git mergetool and vimdiff opened with the image below. I don't know how to use vimdiff. What does each panel here mean and how should I proceed to fix the merge conf...
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How to dismiss keyboard iOS programmatically when pressing return

I created a UITextField programmatically making the UITextField a property of the viewController. I need to dismiss the keyboard with the return and the touch on the screen. I was able to get the screen touch to dismiss, but pressing return is not working. ...
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Multi-gradient shapes

I'd like to create a shape that's like the following image: 5 Answers 5 ...