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What is a elegant way in Ruby to tell if a variable is a Hash or an Array?
To check what @some_var is, I am doing a
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When to use in vs ref vs out
Someone asked me the other day when they should use the parameter keyword out instead of ref . While I (I think) understand the difference between the ref and out keywords (that has been asked before ) and the best explanation seems to be that ref == in and out , what are some (hypothet...
Can I call a constructor from another constructor (do constructor chaining) in C++?
As a C# developer I'm used to running through constructors:
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What is a tracking branch?
Can someone explain a "tracking branch" as it applies to git?
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Asynchronous vs Multithreading - Is there a difference?
Does an asynchronous call always create a new thread? What is the difference between the two?
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How to learn R as a programming language [closed]
I'd like to know how to learn the R language as as 'programming' language as opposed to learning it as a statistical system. My question is prompted by lack of understanding of such functions as parse, eval, etc. which may not find frequent use by an R user with a 'statistics' persuasion.
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What is the appropriate HTTP status code response for a general unsuccessful request (not an error)?
I'm creating a RESTful API that will process a number of user interactions, including placing orders using stored credit cards.
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Why is good UI design so hard for some Developers? [closed]
Some of us just have a hard time with the softer aspects of UI design ( myself especially ). Are "back-end coders" doomed to only design business logic and data layers? Is there something we can do to retrain our brain to be more effective at designing pleasing and useful presentation layers?
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What is Ad Hoc Query?
I'm reading a book about SQL. In that book there's the term Ad Hoc Query , which I don't understand.
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Pointers, smart pointers or shared pointers? [duplicate]
I am programming with normal pointers, but I have heard about libraries like Boost that implement smart pointers. I have also seen that in Ogre3D rendering engine there is a deep use of shared pointers.
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