std::basic_string<CharT,Traits,Allocator>:: assign_range

Replaces the contents of the string with the values in the range rg .

Equivalent to

return assign(
    std::basic_string(
        std::from_range,
        std​::​forward<R>(rg),
        get_allocator())
);

Parameters

Return value

* this

Complexity

Linear in size of rg .

Exceptions

If the operation would cause size() to exceed max_size() , throws std::length_error .

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

Notes

Example

#include <cassert>
#include <string>
int main()
{
    const auto source = {'s', 'o', 'u', 'r', 'c', 'e'};
    std::string destination{"destination"};
#ifdef __cpp_lib_containers_ranges
    destination.assign_range(source);
#else
    destination.assign(source.begin(), source.end());
#endif
    assert(destination == "source");
}

See also