C++ Musings#

Returning by const reference for large objects is better than hoping for copy elision#

If T is used over const T&, a copy has to be generated, even if the caller is only interested in a reference. If const T& is used and the caller only wants a reference, no copy is needed.

Defining textual constants as `const char` or `constexpr const char` is better than `std::string`#

std::string does not store the text locally, but has to execute a new and delete at construction time, which const char* and constexpr const char* do not have to do.