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Multiple aggregations of the same column using pandas GroupBy.agg()
Is there a pandas built-in way to apply two different aggregating functions f1, f2 to the same column df["returns"] , without having to call agg() multiple times?
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What are 'get' and 'set' in Swift?
I'm learning Swift and I'm reading The Swift Programming Language from Apple, I have no Objective C background (only PHP, JS, and other but no Obj C)
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How can I get the last 7 characters of a PHP string?
How would I go about grabbing the last 7 characters of the string below?
7 Answers
7
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Does setting Java objects to null do anything anymore?
I was browsing some old books and found a copy of "Practical Java" by Peter Hagger. In the performance section, there is a recommendation to set object references to null when no longer needed.
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Can you help me understand Moq Callback?
Using Moq and looked at Callback but I have not been able to find a simple example to understand how to use it.
5 Answers...
Why do I need Transaction in Hibernate for read-only operations?
Why do I need Transaction in Hibernate for read-only operations?
4 Answers
4
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How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X)
My version of node is always v0.6.1-pre even after I install brew node and NVM install v0.6.19.
28 Answers
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Verifying a specific parameter with Moq
I'm starting using Moq and struggling a bit.
I'm trying to verify that messageServiceClient is receiving the right parameter, which is an XmlElement, but I can't find any way to make it work. It works only when I don't check a particular value.
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Why Func instead of Predicate?
This is just a curiosity question I was wondering if anyone had a good answer to:
4 Answers
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What are fixtures in programming?
I have heard of this term many times (in the context of programming) but couldn't find any explanation of what it meant. Any good articles or explanations?
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