basic_istringstream Class

项目
07/29/2015

Describes an object that controls extraction of elements and encoded objects from a stream buffer of class basic_stringbuf<Elem, Tr, Alloc>.

template < 
   class Elem,  
   class Tr = char_traits<Elem>,  
   class Alloc = allocator<Elem>  
> 
   class basic_istringstream : public basic_istream<Elem, Tr>

Parameters

Alloc
The allocator class.
Elem
The type of the basic element of the string.
Tr
The character traits specialized on the basic element of the string.

Remarks

The template class describes an object that controls extraction of elements and encoded objects from a stream buffer of class basic_stringbuf<Elem, Tr, Alloc>, with elements of type Elem, whose character traits are determined by the class Tr, and whose elements are allocated by an allocator of class Alloc. The object stores an object of class basic_stringbuf<Elem, Tr, Alloc>.

Constructors

basic_istringstream

Constructs an object of type basic_istringstream.

Typedefs

allocator_type

The type is a synonym for the template parameter Alloc.

Member Functions

rdbuf	Returns the address of the stored stream buffer of type pointer to basic_stringbuf<Elem, Tr, Alloc>.
str	Sets or gets the text in a string buffer without changing the write position.
swap	Exchanges the values in this basic_istringstream object for those of the provided object.

Operators

operator=

Assigns the values to this basic_istringstream object from the object parameter.

Requirements

Header: <sstream>

Namespace: std

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