std::basic_spanstream<CharT,Traits>::basic_spanstream

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Diagnostics library

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Metaprogramming library (C++11)

General utilities library

Containers library

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Ranges 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)

Streams

Abstractions

ios_base

basic_ios

basic_istream

basic_ostream

basic_iostream

File I/O

basic_ifstream

basic_ofstream

basic_fstream

String I/O

basic_istringstream

basic_ostringstream

basic_stringstream

Array I/O

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::basic_spanstream

Member functions

basic_spanstream::basic_spanstream (C++23)

basic_spanstream::operator= (C++23)

basic_spanstream::swap (C++23)

basic_spanstream::rdbuf (C++23)

Underlying buffer operations

basic_spanstream::span (C++23)

Non-member functions

swap(std::basic_spanstream) (C++23)

 

explicit basic_spanstream( std::span<CharT> s, std::ios_base::openmode mode =                                std::ios_base::in | std::ios_base::out );	(1)	(since C++23)
basic_spanstream( basic_spanstream&& rhs );	(2)	(since C++23)
basic_spanstream( const basic_spanstream& ) = delete;	(3)	(since C++23)

Constructs a new basic_spanstream.

1) Uses the storage referenced by s as initial underlying buffer of the wrapped std::basic_spanbuf device. The wrapped std::basic_spanbuf object is constructed as basic_spanbuf<Char, Traits>(s, mode).

2) Move constructor. Move constructs the std::basic_iostream base subobject and the wrapped std::basic_spanbuf from those of rhs, and then calls set_rdbuf with the address of the wrapped std::basic_spanbuf in *this to install it.

3) Copy constructor is deleted. basic_spanstream is not copyable.

Parameters

s	-	std::span referencing the storage to be use as initial underlying buffer of stream
mode	-	specifies stream open mode. Following constants and bit-wise OR between them may be used: Constant Explanation app seek to the end of stream before each write binary open in binary mode in open for reading out open for writing trunc discard the contents of the stream when opening ate seek to the end of stream immediately after open noreplace (C++23) open in exclusive mode
other	-	another basic_spanstream to be moved from

Exceptions

May throw implementation-defined exceptions.

See also

(constructor)

constructs a basic_spanbuf object (public member function of std::basic_spanbuf<CharT,Traits>)