C++ Strings [C++ Reference]
Keywords: string,start
Date: 2009-10-15T09:27:10-0700

[[C++ Strings]]
C++ Reference
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# C++ Strings

The `basic_string` class provides a useful way to manipulate and store sequences of characters. It is defined as a basic template class in the `std` namespace in the `<string>` header file.

     template <typename Char, typename Traits = char_traits<Char>, typename Allocator = allocator<Char> >
     class basic_string;

The C++ standard library provides two specializations of class `basic_string`.

     typedef basic_string<char>    string;
     typedef basic_string<wchar_t> wstring;

In the following sections, `string` means any specialization of class `basic_string`, and `Char` means its character type.

Constructors | create strings from arrays of characters and other strings
Operators | concatenate strings, assign strings, use strings for I/O, compare strings
append | append characters and strings onto a string
assign | give a string values from strings of characters and other C++ strings
at | returns the character at a specific location
begin | returns an iterator to the beginning of the string
c_str | returns a non-modifiable standard C character array version of the string
capacity | returns the number of characters that the string can hold
clear | removes all characters from the string
compare | compares two strings
copy | copies characters from a string into an array
data | returns a pointer to the first character of a string
empty | true if the string has no characters
end | returns an iterator just past the last character of a string
erase | removes characters from a string
find | find characters in the string
find_first_not_of | find first absence of characters
find_first_of | find first occurrence of characters
find_last_not_of | find last absence of characters
find_last_of | find last occurrence of characters
getline | read data from an I/O stream into a string
insert | insert characters into a string
length | returns the length of the string
max_size | returns the maximum number of characters that the string can hold
npos | a special value that indicates “not found” or “all remaining characters”
push_back | add a character to the end of the string
rbegin | returns a reverse_iterator to the end of the string
rend | returns a reverse_iterator to the beginning of the string
replace | replace characters in the string
reserve | sets the minimum capacity of the string
resize | change the size of the string
rfind | find the last occurrence of a substring
size | returns the number of items in the string
substr | returns a certain substring
swap | swap the contents of this string with another

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