basic_string::const_reference
A type that provides a reference to a const element stored in a string for reading and performing const operations.
typedef typename allocator_type::const_reference const_reference;
설명
이 const_reference 유형은 요소의 값을 수정하는 것을 사용할 수 없습니다.
The type is a synonym for allocator_type::const_reference. For string type, it is equivalent to const char&.
예제
See the example for at for an example of how to declare and use const_reference.
요구 사항
헤더: <string>
네임스페이스: std