NAME¶

std::basic_string::replace_with_range - std::basic_string::replace_with_range

Synopsis¶

template< container-compatible-range<CharT> R >

constexpr std::basic_string& replace_with_range( const_iterator
first, (since C++23)
const_iterator last,

R&& rg );

Replaces the characters in the range [first, last) with the characters from the
range rg.

Equivalent to

return replace(first,
last,
std::basic_string(
std::from_range,
std::forward<R>(rg),
get_allocator())
);

Parameters¶

first, last - range of characters that is going to be replaced
rg - a container compatible range

Return value¶

*this

Complexity¶

Linear in size of rg.

Exceptions¶

If the operation would result in size() > max_size(), throws std::length_error.

If an exception is thrown for any reason, this function has no effect (strong
exception safety guarantee).

Notes¶

Feature-test macro Value Std Feature
__cpp_lib_containers_ranges 202202L (C++23) member functions that accept container
compatible range

Example¶

// Run this code

#include <algorithm>
#include <cassert>
#include <forward_list>
#include <iterator>
#include <string>

int main()
{
using namespace std::literals;

auto s{"Today is today!"s};
constexpr auto today{"today"sv};
constexpr auto tomorrow{"tomorrow's yesterday"sv};
std::forward_list<char> rg;
std::ranges::reverse_copy(tomorrow, std::front_inserter(rg));

const auto pos{s.rfind(today)};
assert(pos != s.npos);
const auto first{std::next(s.begin(), pos)};
const auto last{std::next(first, today.length())};

#ifdef __cpp_lib_containers_ranges
s.replace_range(first, last, rg);
#else
s.replace(first, last, rg.cbegin(), rg.cend());
#endif

assert("Today is tomorrow's yesterday!" == s);
}

See also¶

replace replaces specified portion of a string
(public member function)