std::numpunct<CharT>::~numpunct
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Defined in header
<locale>
protected: ~numpunct();
Destructs a std::numpunct facet. This destructor is protected and virtual (due to base class destructor being virtual). An object of type std::numpunct , like most facets, can only be destroyed when the last std::locale object that implements this facet goes out of scope or if a user-defined class is derived from std::numpunct and implements a public destructor.
[edit] Example
Run this code
#include <iostream> #include <locale> struct Destructible_numpunct : public std::numpunct <wchar_t> { Destructible_numpunct(std::size_t refs = 0) : numpunct(refs) {} // note: the implicit destructor is public }; int main() { Destructible_numpunct dc; // std::numpunct<wchar_t> c; // compile error: protected destructor }