std::basic_string::data

From cppreference.com


const CharT* data() const;

Returns pointer to the underlying array serving as character storage. The pointer is such that the range [data(); data() + size()) is valid and the values in it correspond to the values stored in the string.

The returned array is not required to be null-terminated.

If empty() returns true, the pointer is a non-null pointer that should not be dereferenced.

(until C++11)

The returned array is null-terminated, that is, data() and c_str() perform the same function.

If empty() returns true, the pointer points to a single null character.

(since C++11)

The pointer obtained from data() may be invalidated by:

Passing a non-const reference to the string to any standard library function, or
Calling non-const member functions on the string, excluding operator[], at, front, back, begin, rbegin, end, and rend.

Modifying the character array accessed through data is undefined behavior.

Language
Standard library headers
Concepts
Utilities library
Strings library
Containers library
Algorithms library
Iterators library
Numerics library
Input/output library
Localizations library
Regular expressions library (C++11)
Atomic operations library (C++11)
Thread support library (C++11)


front (C++11)	accesses the first character (public member function)

back (C++11)	accesses the last character (public member function)

c_str	returns a non-modifiable standard C character array version of the string (public member function)

std::basic_string::data

Contents

[edit] Parameters

[edit] Return value

[edit] Complexity

[edit] Exceptions

[edit] See also

data()[i] == operator[](i) for every `i` in `[0, size())`.	(until C++11)
data() + i == &operator[](i) for every `i` in `[0, size()]`.	(since C++11)