< cpp‎ | locale‎ | num put
Defined in header <locale>
protected: ~num_put();

Destructs a std::num_put facet. This destructor is protected and virtual (due to base class destructor being virtual). An object of type std::num_put, 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::num_put and implements a public destructor.


#include <iostream>
#include <locale>
struct Destructible_num_put : public std::num_put<wchar_t>
    Destructible_num_put(std::size_t refs = 0) : num_put(refs) {}
    // note: the implicit destructor is public
int main()
    Destructible_num_put dc;
    // std::num_put<wchar_t> c;  // compile error: protected destructor