std::istrstream::~istrstream

 

C++

Compiler support

Freestanding and hosted

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Standard library

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Named requirements

Feature test macros (C++20)

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Concepts library (C++20)

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Technical specifications

Symbols index

External libraries

 

Input/output library

I/O manipulators

Print functions (C++23)

C-style I/O

Buffers

basic_streambuf

basic_filebuf

basic_stringbuf

basic_spanbuf (C++23)

strstreambuf (C++98/26*)

basic_syncbuf (C++20)

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ios_base

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basic_stringstream

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basic_ispanstream (C++23)

basic_ospanstream (C++23)

basic_spanstream (C++23)

istrstream (C++98/26*)

ostrstream (C++98/26*)

strstream (C++98/26*)

Synchronized Output

basic_osyncstream (C++20)

Types

streamoff

streamsize

fpos

Error category interface

iostream_category (C++11)

io_errc (C++11)

 

std::istrstream

Member functions

istrstream::istrstream

istrstream::~istrstream

istrstream::rdbuf

istrstream::str

 

virtual ~istrstream();		(deprecated in C++98) (removed in C++26)

Destroys a std::istrstream object, which also destroys the member std::strstreambuf.

Parameters

(none)

Notes

The constructors of std::istrstream do not create the underlying std::strstreambuf in dynamically allocated mode, so the memory leaks that are possible with std::ostrstream::~ostrstream or std::strstream::~strstream do not apply.

Example

Run this code

#include <iostream>
#include <strstream>
 
int main()
{
    {
        std::istrstream s("1.234");
        double d;
        s >> d;
        std::cout << d << '\n';
    } // destructor called
}

Output:

1.234