Boost loop buffer

Boost loop buffer

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1. # Include <boost/circular_buffer.hpp>
3. Int _ tmain (INT argc, _ tchar * argv [])
4. {
6. Boost: circular_buffer <int> CB (3 );
8. // Insert some elements into the buffer.
9. CB. push_back (1 );
10. CB. push_back (2 );
11. CB. push_back (3 );
13. Int A = CB [0]; // A = 1
14. Int B = CB [1]; // B = 2
15. Int c = CB [2]; // C = 3
17. // The buffer is full now, pushing subsequent
18. // Elements will overwrite the front-most elements.
20. CB. push_back (4); // overwrite 1 with 4.
21. CB. push_back (5); // overwrite 2 with 5.
23. // The buffer now contains 3, 4 and 5.
25. A = CB [0]; // A = 3
26. B = CB [1]; // B = 4
27. C = CB [2]; // C = 5
29. // Elements can be popped from either the front or the back.
31. CB. pop_back (); // 5 is removed.
32. CB. pop_front (); // 3 is removed.
34. Int d = CB [0]; // d = 4
36. Return 0;
37. }