cxx/test/utilities/tuple/tuple.tuple/DefaultOnly.h

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#ifndef DEFAULTONLY_H
#define DEFAULTONLY_H
#include <cassert>
class DefaultOnly
{
int data_;
DefaultOnly(const DefaultOnly&);
DefaultOnly& operator=(const DefaultOnly&);
public:
static int count;
DefaultOnly() : data_(-1) {++count;}
~DefaultOnly() {data_ = 0; --count;}
friend bool operator==(const DefaultOnly& x, const DefaultOnly& y)
{return x.data_ == y.data_;}
friend bool operator< (const DefaultOnly& x, const DefaultOnly& y)
{return x.data_ < y.data_;}
};
int DefaultOnly::count = 0;
#endif