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std::basic_string::data

From cppreference.com
< cpp‎ | string‎ | basic string
 
 
 
std::basic_string
 
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:

Modifying the character array accessed through data is undefined behavior.

Contents

[edit] Parameters

(none)

[edit] Return value

A pointer to the underlying character storage.

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)

[edit] Complexity

Constant.

[edit] Exceptions

(none) (until C++11)
noexcept specification:  
noexcept
  
(since C++11)

[edit] See also

(C++11)
accesses the first character
(public member function) [edit]
(C++11)
accesses the last character
(public member function) [edit]
returns a non-modifiable standard C character array version of the string
(public member function) [edit]