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Naming returned columns in Pandas aggregate function? [duplicate]

I'm having trouble with Pandas' groupby functionality. I've read the documentation , but I can't see to figure out how to apply aggregate functions to multiple columns and have custom names for those columns. ...
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How to filter git diff based on file extensions?

Is there an option to restrict git diff to a given set of file extensions? 9 Answers ...
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What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java

... I'll disagree with Chris's answer in one regard. The classes Any, AnyRef and AnyVal are classes. But they don't appear as classes in bytecode, because of intrinsic limitations of the JVM. This arises out of the fact that not everything in Java is an object. In addition to objects, there are pri...
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How does a Breadth-First Search work when looking for Shortest Path?

I've done some research, and I seem to be missing one small part of this algorithm. I understand how a Breadth-First Search works, but I don't understand how exactly it will get me to a specific path, as opposed to just telling me where each individual node can go. I guess the easiest way to explain...
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Bordered UITextView

...d a UITextView . I have gone through the Apple documentation but couldn't find any property there. Please help. 14 Answers...
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How to fix corrupted git repository?

I tried cloning my repository which I keep on my Ubuntu one folder to a new machine and I got this: 14 Answers ...
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Undo git stash pop that results in merge conflict

...hanges to my codebase, not realizing I was on an old topic branch. To transfer them, I wanted to stash them and then apply them to a new branch off of master. I used git stash pop to transfer work-in-progress changes to this new branch, forgetting that I hadn't pulled new changes into master befor...
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What's the difference between “squash” and “fixup” in Git/Git Extension?

I've been using Git Extensions for a while now (it's awesome!) but I haven't found a simple answer to the following: 6 An...
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Is there any boolean type in Oracle databases?

...clear recommendation about what to use instead. See this thread on asktom. From recommending CHAR(1) 'Y'/'N' they switch to NUMBER(1) 0/1 when someone points out that 'Y'/'N' depends on the English language, while e.g. German programmers might use 'J'/'N' instead. The worst thing is that they defen...
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Close file without quitting VIM application?

I use the :e and :w commands to edit and to write a file. I am not sure if there is "close" command to close the current file without leaving Vim? ...