Logging::operator<<: change argument type from T& to const T& #13
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Non-const references cannot be bound to functions results and literals,
so the code
```C++
Logging log;
try {
throw std::runtime_error("message");
} catch (std::exception& e) {
log << e.what() << '\n';
}
```
ends up calling `std::ostream::operator<<` both for `e.what()` and
`'\n'` and produces nothing in the output.
|
please heck if still relavent |
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Non-const references cannot be bound to functions results and literals, so the code
ends up calling
std::ostream::operator<<both fore.what()and'\n'and produces nothing in the output.