Daily bit(e) of C++ | anonymous namespace

Daily bit(e) of C++ ♻️169, Controlling the visibility of symbols using anonymous namespaces.

Anonymous (unnamed) namespaces are a modern tool for controlling the linkage of symbols (since C++11).

Any symbols inside an unnamed namespace will have internal linkage (symbols will only be visible to the translation unit).

Note that while there can be only one instance of a symbol with external linkage in a program, symbols with internal linkage can be repeated across different units.

Click to open in Compiler Explorer.

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