I have browsed all the relevant questions about unnamed namespaces, yet I cannot see if and how they can be used to replace a static variable in this context:
returnType dummyfun () {
static int staticInt;
// do something...
};
Can I use unnamed namespaces instead of static variables inside functions?
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An unnamed namespace cannot be used to replace an internal static variable.
Unnamed namespaces are declared outside of the scope of a function. They are useful to allow access to function and variable names within a translation unit while hiding those same names outside of the translation unit.
An internal static variable is a variable whose name is accessible only within the scope of the function where it is declared and whose extent persists between calls to the function.