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Pandas selecting by label sometimes return Series, sometimes returns DataFrame
In Pandas, when I select a label that only has one entry in the index I get back a Series, but when I select an entry that has more then one entry I get back a data frame.
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How to assign from a function which returns more than one value?
Still trying to get into the R logic... what is the "best" way to unpack (on LHS) the results from a function returning multiple values?
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How to write loop in a Makefile?
I want to execute the following commands:
12 Answers
12
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Difference between `constexpr` and `const`
What's the difference between constexpr and const ?
9 Answers
9
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How to extend an existing JavaScript array with another array, without creating a new array
There doesn't seem to be a way to extend an existing JavaScript array with another array, i.e. to emulate Python's extend method.
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Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
I've been reading some things on neural networks and I understand the general principle of a single layer neural network. I understand the need for aditional layers, but why are nonlinear activation functions used?
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Traits vs. interfaces
I've been trying to study up on PHP lately, and I find myself getting hung up on traits. I understand the concept of horizontal code reuse and not wanting to necessarily inherit from an abstract class. What I don't understand is: What is the crucial difference between using traits versus interfaces?...
Comparison between Corona, Phonegap, Titanium
I am a web developer and I want to move my web products to iPhone. One of the products is like Google Maps: show map on the phone screen, you can drag or resize the map and view some information that we add to the map.
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What is a wrapper class?
What is a wrapper class?
How are such classes useful?
17 Answers
17
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When is TCP option SO_LINGER (0) required?
I think I understand the formal meaning of the option. In some legacy code I'm handling now, the option is used. The customer complains about RST as response to FIN from its side on connection close from its side.
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