Provided by: libstdc++-7-doc_7.5.0-6ubuntu2_all 

NAME
std::basic_istringstream< _CharT, _Traits, _Alloc > - Controlling input for std::string.
SYNOPSIS
Public Types
typedef basic_istream< char_type, traits_type > __istream_type
typedef basic_string< _CharT, _Traits, _Alloc > __string_type
typedef basic_stringbuf< _CharT, _Traits, _Alloc > __stringbuf_type
typedef _Alloc allocator_type
typedef _CharT char_type
typedef traits_type::int_type int_type
typedef traits_type::off_type off_type
typedef traits_type::pos_type pos_type
typedef _Traits traits_type
Public Member Functions
basic_istringstream (basic_istringstream &&__rhs)
basic_istringstream (const __string_type &__str, ios_base::openmode __mode=ios_base::in)
Starts with an existing string buffer.
basic_istringstream (const basic_istringstream &)=delete
basic_istringstream (ios_base::openmode __mode=ios_base::in)
Default constructor starts with an empty string buffer.
~basic_istringstream ()
The destructor does nothing.
basic_istringstream & operator= (basic_istringstream &&__rhs)
basic_istringstream & operator= (const basic_istringstream &)=delete
__stringbuf_type * rdbuf () const
Accessing the underlying buffer.
__string_type str () const
Copying out the string buffer.
void str (const __string_type &__s)
Setting a new buffer.
void swap (basic_istringstream &__rhs)
Detailed Description
template<typename _CharT, typename _Traits, typename _Alloc>
class std::basic_istringstream< _CharT, _Traits, _Alloc >" Controlling input for std::string.
Template Parameters
_CharT Type of character stream.
_Traits Traits for character type, defaults to char_traits<_CharT>.
_Alloc Allocator type, defaults to allocator<_CharT>.
This class supports reading from objects of type std::basic_string, using the inherited functions from
std::basic_istream. To control the associated sequence, an instance of std::basic_stringbuf is used,
which this page refers to as sb.
Definition at line 100 of file iosfwd.
Constructor & Destructor Documentation
template<typename _CharT , typename _Traits , typename _Alloc > std::basic_istringstream< _CharT, _Traits,
_Alloc >::basic_istringstream (ios_base::openmode __mode = ios_base::in) [inline], [explicit]
Default constructor starts with an empty string buffer.
Parameters
__mode Whether the buffer can read, or write, or both.
ios_base::in is automatically included in __mode.
Initializes sb using __mode|in, and passes &sb to the base class initializer. Does not allocate any
buffer.
That's a lie. We initialize the base class with NULL, because the string class does its own memory
management.
Definition at line 416 of file sstream.
template<typename _CharT , typename _Traits , typename _Alloc > std::basic_istringstream< _CharT, _Traits,
_Alloc >::basic_istringstream (const __string_type & __str, ios_base::openmode __mode = ios_base::in)
[inline], [explicit]
Starts with an existing string buffer.
Parameters
__str A string to copy as a starting buffer.
__mode Whether the buffer can read, or write, or both.
ios_base::in is automatically included in mode.
Initializes sb using str and mode|in, and passes &sb to the base class initializer.
That's a lie. We initialize the base class with NULL, because the string class does its own memory
management.
Definition at line 434 of file sstream.
template<typename _CharT , typename _Traits , typename _Alloc > std::basic_istringstream< _CharT, _Traits,
_Alloc >::~basic_istringstream () [inline]
The destructor does nothing. The buffer is deallocated by the stringbuf object, not the formatting
stream.
Definition at line 445 of file sstream.
Member Function Documentation
template<typename _CharT , typename _Traits , typename _Alloc > __stringbuf_type* std::basic_istringstream<
_CharT, _Traits, _Alloc >::rdbuf () const [inline]
Accessing the underlying buffer.
Returns
The current basic_stringbuf buffer.
This hides both signatures of std::basic_ios::rdbuf().
Definition at line 485 of file sstream.
template<typename _CharT , typename _Traits , typename _Alloc > __string_type std::basic_istringstream<
_CharT, _Traits, _Alloc >::str () const [inline]
Copying out the string buffer.
Returns
rdbuf()->str()
Definition at line 493 of file sstream.
template<typename _CharT , typename _Traits , typename _Alloc > void std::basic_istringstream< _CharT,
_Traits, _Alloc >::str (const __string_type & __s) [inline]
Setting a new buffer.
Parameters
__s The string to use as a new sequence.
Calls rdbuf()->str(s).
Definition at line 503 of file sstream.
Author
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