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How to keep index when using pandas merge

I would like to merge two DataFrames , and keep the index from the first frame as the index on the merged dataset. However, when I do the merge, the resulting DataFrame has integer index. How can I specify that I want to keep the index from the left data frame? ...
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How do I create a WPF Rounded Corner container?

...d like to have a WPF Rounded Corner container to place a bunch of other elements within. Does anyone have some suggestions or sample code on how we can best accomplish this? Either with styles on a or with creating a custom control? ...
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How to securely store access token and secret in Android?

I am going to use oAuth to fetch mails and contacts from google. I don't want to ask the user each time to log in to obtain an access token and secret. From what I understood, I need to store them with my application either in a database or SharedPreferences . But I am a bit worried about security ...
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How can I read a function's signature including default argument values?

Given a function object, how can I get its signature? For example, for: 8 Answers 8 ...
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HEAD and ORIG_HEAD in Git

What do these symbols refer to and what do they mean? 4 Answers 4 ...
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Same-named attributes in attrs.xml for custom view

I'm writing a few custom views which share some same-named attributes. In their respective <declare-styleable> section in attrs.xml I'd like to use the same names for attributes: ...
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?

In case I do not care about the order of task completion and just need them all to complete, should I still use await Task.WhenAll instead of multiple await ? e.g, is DoWork2 below a preferred method to DoWork1 (and why?): ...
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How to get a reference to current module's attributes in Python

What I'm trying to do would look like this in the command line: 3 Answers 3 ...
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In Visual Studio C++, what are the memory allocation representations?

...CC" and "CD" when inspecting variables in the debugger in C++ during run-time. 3 Answers ...
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Python Infinity - Any caveats?

... You can still get not-a-number (NaN) values from simple arithmetic involving inf: >>> 0 * float("inf") nan Note that you will normally not get an inf value through usual arithmetic calculations: >>> 2.0**2 4.0 >>> _**2 1...