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Why use non-member begin and end functions in C++11?
Every standard container has a begin and end method for returning iterators for that container. However, C++11 has apparently introduced free functions called std::begin and std::end which call the begin and end member functions. So, instead of writing
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How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
I'm using the PostgreSQL database for my Ruby on Rails application (on Mac OS X 10.9).
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Store query result in a variable using in PL/pgSQL
How to assign the result of a query to a variable in PL/pgSQL, the procedural language of PostgreSQL?
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Is there a performance difference between i++ and ++i in C?
Is there a performance difference between i++ and ++i if the resulting value is not used?
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Can you use reflection to find the name of the currently executing method?
Like the title says: Can reflection give you the name of the currently executing method.
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How to validate phone numbers using regex
I'm trying to put together a comprehensive regex to validate phone numbers. Ideally it would handle international formats, but it must handle US formats, including the following:
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Is returning by rvalue reference more efficient?
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Should I Dispose() DataSet and DataTable?
DataSet and DataTable both implement IDisposable, so, by conventional best practices, I should call their Dispose() methods.
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Specifying column name in a “references” migration
I want to make a migration in Rails, referencing another table. Usually, I would do something like:
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How to automatically generate N “distinct” colors?
...ethods below to automatically select N distinct colors. It works by defining a piecewise linear function on the RGB cube. The benefit of this is you can also get a progressive scale if that's what you want, but when N gets large the colors can start to look similar. I can also imagine evenly subdivi...