Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Clear the contents.
constexpr void clear();
Erases all characters from the string. After this call, size()
returns zero.
Linear in size().
All references, pointers, or iterators referring to contained elements are invalidated. Any past-the-end iterators are also invalidated.