| Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 1 | #ifndef DEFAULTONLY_H |
| 2 | #define DEFAULTONLY_H |
| 3 | |
| 4 | #include <cassert> |
| 5 | |
| 6 | class DefaultOnly |
| 7 | { |
| 8 | int data_; |
| 9 | |
| 10 | DefaultOnly(const DefaultOnly&); |
| 11 | DefaultOnly& operator=(const DefaultOnly&); |
| 12 | public: |
| 13 | static int count; |
| 14 | |
| 15 | DefaultOnly() : data_(-1) {++count;} |
| 16 | ~DefaultOnly() {data_ = 0; --count;} |
| 17 | |
| 18 | friend bool operator==(const DefaultOnly& x, const DefaultOnly& y) |
| 19 | {return x.data_ == y.data_;} |
| 20 | friend bool operator< (const DefaultOnly& x, const DefaultOnly& y) |
| 21 | {return x.data_ < y.data_;} |
| 22 | }; |
| 23 | |
| 24 | int DefaultOnly::count = 0; |
| 25 | |
| 26 | #endif |