std::basic_istringstream<CharT,Traits,Allocator>::view

 

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basic_istringstream::view (C++20)

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std::basic_string_view<CharT, Traits> view() const noexcept;		(since C++20)

Obtains a std::basic_string_view over the underlying string object. Equivalent to return rdbuf()->view();.

Parameters

(none)

Return value

A std::basic_string_view over the underlying string object.

Example

Run this code

#include <iostream>
#include <sstream>
 
int main()
{
    // input/output stream
    std::stringstream buf1;
    buf1 << 69;
    int n = 0;
    buf1 >> n;
    std::cout << "1) buf1 = [" << buf1.view() << "], n = " << n << '\n';
 
    // output stream in append mode
    std::ostringstream buf2("test", std::ios_base::ate);
    buf2 << '1';
    std::cout << "2) buf2 = [" << buf2.view() << "]\n";
 
    // input stream
    std::istringstream inbuf("-42");
    inbuf >> n;
    std::cout << "3) inbuf = [" << inbuf.view() << "], n = " << n << '\n';
}

Output:

1) buf1 = [69], n = 69
2) buf2 = [test1]
3) inbuf = [-42], n = -42

See also

view (C++20)

obtains a view over the underlying character sequence (public member function of std::basic_stringbuf<CharT,Traits,Allocator>)