I'm wondering what is the best way to display unique records from a has_many, through relationship in Rails3. 4 Answers ...

What are the main differences between vector and list data types in R? What are the advantages or disadvantages of using (or not) these two data types? ...

I am trying to automate download of historic stock data using python. The URL I am trying to open responds with a CSV file, but I am unable to open using urllib2. I have tried changing user agent as specified in few questions earlier, I even tried to accept response cookies, with no luck. Can you pl...

In C# I see global:: used quite often in auto-generated code. It is not something I have ever used myself so I don't know what the purpose is. Can someone explain this? ...

I occasionally have to add a class to an html element based on a condition. The problem is I can't figure out a clean way of doing it. Here's an example of the stuff I've tried: ...

What is the difference between <? super E> and <? extends E> ? 9 Answers ...

I'm honestly not clear on the semantics here. They're all about copies/variants of a code+history unit, but past that I'm not sure I could say. Is this logical structure explained somewhere? ...

In a few simple sentences, what is a Java ClassLoader, when is it used and why? 7 Answers ...

How do I convert between big-endian and little-endian values in C++? 31 Answers 31 ...

I was reading the documentation for StringBuffer , in particular the reverse() method. That documentation mentions something about surrogate pairs . What is a surrogate pair in this context? And what are low and high surrogates? ...