Tired of typing cout more than actual logic? Try this macro. It lets you debug anything (just override << first).
Works for almost every C++ type. Side effects may include cleaner code and sudden confidence in debugging.
//*** debug(x) ***//
#define DEBUG 1
#if DEBUG
#define del cout << '\n'
#define debug(...) _debug(#__VA_ARGS__, __VA_ARGS__)
template <class X, class Y>
ostream& operator<<(ostream& os, pair<X, Y> const& p) {
return os << "(" << p.first << ", " << p.second << ")";
}
template <class Ch, class Tr, class Container>
basic_ostream<Ch, Tr>& operator<<(basic_ostream<Ch, Tr>& os, Container const& x) {
int i = 0, n = (int)distance(x.begin(), x.end());
os << "{ ";
for (const auto& y : x) os << y << (++i < n ? ", " : "");
return os << " }";
}
template <typename... Args>
void _debug(const char* s, Args&&... args) {
cout << "{ ";
size_t i = 0, cnt = 0, n = sizeof...(args);
auto next = [&]() {
while (s[i] && (s[i] == ' ' || s[i] == ',')) ++i;
size_t st = i;
while (s[i] && s[i] != ',') ++i;
return string(s + st, i - st);
};
auto dummy = {(cout << next() << ": " << args << (++cnt < n ? ", " : ""), 0)...};
(void)dummy;
cout << " }" << '\n';
}
#else
#define del
#define debug(...)
#endif
Full debug code
Output of full debug code
Drop a comment if you agree—or if you’ve got a genius idea you’re hiding!
Update: It works with C++11 or newer C++ versions
