std::basic_string::replace

 

C++

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)

 

Strings library

Null-terminated strings

Byte strings

Multibyte strings

Wide strings

Classes

basic_string

char_traits

 

std::basic_string

Member functions

basic_string::basic_string

basic_string::operator=

basic_string::assign

basic_string::get_allocator

Element access

basic_string::at

basic_string::operator[]

basic_string::front (C++11)

basic_string::back (C++11)

basic_string::data

basic_string::c_str

Iterators

basic_string::begin basic_string::cbegin (C++11)

basic_string::end basic_string::cend (C++11)

basic_string::rbegin basic_string::crbegin (C++11)

basic_string::rend basic_string::crend (C++11)

Capacity

basic_string::empty

basic_string::size

basic_string::length

basic_string::max_size

basic_string::reserve

basic_string::capacity

basic_string::shrink_to_fit (C++11)

Operations

basic_string::clear

basic_string::insert

basic_string::erase

basic_string::push_back

basic_string::pop_back (C++11)

basic_string::append

basic_string::operator+=

basic_string::compare

basic_string::replace

basic_string::substr

basic_string::copy

basic_string::resize

basic_string::swap

Search

basic_string::find

basic_string::rfind

basic_string::find_first_of

basic_string::find_first_not_of

basic_string::find_last_of

basic_string::find_last_not_of

Constants

basic_string::npos

Non-member functions

operator+

operator== operator!= operator< operator> operator<= operator>=

swap(std::basic_string)

operator<< operator>>

getline

stoi stol stoll (C++11) (C++11) (C++11)

stoul stoull (C++11) (C++11)

stof stod stold (C++11) (C++11) (C++11)

to_string (C++11)

to_wstring (C++11)

Helper classes

hash<std::string> hash<std::wstring> hash<std::u32string> hash<std::u16string> (C++11)

 

basic_string& replace( size_type pos, size_type count,                        const basic_string& str ); basic_string& replace( const_iterator first, const_iterator last,                        const basic_string& str );	(1)
basic_string& replace( size_type pos, size_type count,                        const basic_string& str,                        size_type pos2, size_type count2 ); template< class InputIt > basic_string& replace( const_iterator first, const_iterator last,                        InputIt first2, InputIt last2 );	(2)
basic_string& replace( size_type pos, size_type count,                        const CharT* cstr, size_type count2 ); basic_string& replace( const_iterator first, const_iterator last,                        const CharT* cstr, size_type count2 );	(3)
basic_string& replace( size_type pos, size_type count,                        const CharT* cstr ); basic_string& replace( const_iterator first, const_iterator last,                        const CharT* cstr );	(4)
basic_string& replace( size_type pos, size_type count,                        size_type count2, CharT ch ); basic_string& replace( const_iterator first, const_iterator last,                        size_type count2, CharT ch );	(5)
basic_string& replace( const_iterator first, const_iterator last,                        std::initializer_list<CharT> ilist );	(6)	(since C++11)

Replaces the part of the string indicated by either [pos, pos + count) or [first, last) with a new string.

The new string can be one of:

1) string str

2) substring [pos2, pos2 + count2) of str or characters in the range [first2, last2)

3) first count2 charcters of the character string pointed to by cstr

4) null-terminated character string pointed to by cstr

5) count2 copies of character ch

6) characters in the initializer list ilist

Parameters

pos	-	start of the substring that is going to be replaced
count	-	length of the substring that is going to be replaced
first, last	-	range of characters that is going to be replaced
str	-	string to use for replacement
pos2	-	start of the substring to replace with
count2	-	number of characters to replace with
cstr	-	pointer to the character string to use for replacement
ch	-	character value to use for replacement
first2, last2	-	range of characters to use for replacement
init	-	initializer list with the characters to use for replacement
Type requirements
- InputIt must meet the requirements of InputIterator.

Return value

*this

Exceptions

std::out_of_range if pos > length() or pos2 > str.length()

std::length_error if the resulting string will exceed maximum possible string length (std::string::npos - 1)

Example

run this code

#include <iostream>
#include <string>
 
int main()
{
    std::string str("The quick brown fox jumps over the lazy dog.");
 
    str.replace(10, 5, "red"); // (4)
 
    str.replace(str.begin(), str.begin() + 3, 1, 'A'); // (5)
 
    std::cout << str << '\n';
}

Output:

A quick red fox jumps over the lazy dog.