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Run an OLS regression with Pandas Data Frame

I have a pandas data frame and I would like to able to predict the values of column A from the values in columns B and C. Here is a toy example: ...
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In JavaScript can I make a “click” event fire programmatically for a file input element?

...u cannot do that in all browsers, supposedly IE does allow it, but Mozilla and Opera do not. When you compose a message in GMail, the 'attach files' feature is implemented one way for IE and any browser that supports this, and then implemented another way for Firefox and those browsers that do not...
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How do I create delegates in Objective-C?

I know how delegates work, and I know how I can use them. 19 Answers 19 ...
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Renaming branches remotely in Git

If there is a repository that I only have git:// access to (and would usually just push+pull), is there a way to rename branches in that repository in the same way that I would do locally with git branch -m ? ...
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How to create a static library with g++?

Can someone please tell me how to create a static library from a .cpp and a .hpp file? Do I need to create the .o and the .a? I would also like to know how can I compile a static library in and use it in other .cpp code. I have header.cpp , header.hpp . I would like to create header.a . Test the...
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Why are arrays covariant but generics are invariant?

... Via wikipedia: Early versions of Java and C# did not include generics (a.k.a. parametric polymorphism). In such a setting, making arrays invariant rules out useful polymorphic programs. For example, consider writing a function to shuffle an array, or a fun...
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Android - Back button in the title bar

In many apps (Calendar, Drive, Play Store) when you tap a button and enter a new activity, the icon in the title bar turns into a back button, but for the app I am making, it doesn't do that. How do I make that icon take you back to the previous screen? ...
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Why is the Fibonacci series used in agile planning poker? [closed]

... “[a] little estimation effort helps a lot and [a] big estimation effort helps little” great article – ptim Feb 22 '17 at 15:06 add a comment...
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“loop:” in Java code. What is this, and why does it compile?

... all know what this code is (apart from awful)? Solution: two labels, url and http, a comment www.myserver.com/myfile.mp3 and a method call with a parameter that has the same name (url) as the label. Yup, this compiles (if you define the method call and the local variable elsewhere). ...
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How do I verify jQuery AJAX events with Jasmine?

...DD specs for basic jQuery AJAX requests. I am currently using Jasmine in standalone mode (i.e. through SpecRunner.html ). I have configured SpecRunner to load jquery and other .js files. Any ideas why the following doesn't work? has_returned does not become true, even thought the "yuppi!" alert sho...