The char_traits class describes attributes associated with a character.
template < class CharType > struct char_traits;
- The element data type.
The template class describes various character traits for type CharType. The template class basic_string as well as several iostream template classes, including basic_ios, use this information to manipulate elements of type CharType. Such an element type must not require explicit construction or destruction. It must supply a default constructor, a copy constructor, and an assignment operator, with the expected semantics. A bitwise copy must have the same effect as an assignment. None of the member functions of class char_traits can throw exceptions.