We will continue with the finishing and versions more associated with the internal part of the programming than with the external commitments.
The need to have versions of variables, with data and operations, has led to the extension and creation of languages that explicitly allow it, such as C#, Java, or C++. We will not touch on so-called "functional" languages like Haskell at these points.
Well, each language does it differently, in C++:
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