std::basic_spanbuf<CharT,Traits>:: span
From cppreference.com
<
cpp
|
io
|
basic spanbuf
|
std::
span
<
CharT
>
span
(
)
const
noexcept
;
|
(1) | (since C++23) |
|
void
span
(
std::
span
<
CharT
>
s
)
noexcept
;
|
(2) | (since C++23) |
1)
Gets a
span
referencing the written area if
std::ios_base::out
is set in the open mode, or a
span
referencing the underlying buffer otherwise.
2)
Makes the
basic_spanbuf
perform I/O on the buffer referenced by
s
. Sets pointers to get area, put area, or both.
|
Set bits in open mode
(affecting pointers to get area) |
Return value after setting | ||
|---|---|---|---|
| eback() | gptr() | egptr() | |
| std:: ios_base :: in | s. data ( ) | s. data ( ) | s. data ( ) + s. size ( ) |
|
Set bits in open mode
(affecting pointers to put area) |
Return value after setting | ||
| pbase() | pptr() | epptr() | |
| std:: ios_base :: out && ! std:: ios_base :: ate | s. data ( ) | s. data ( ) | s. data ( ) + s. size ( ) |
| std:: ios_base :: out && std:: ios_base :: ate | s. data ( ) | s. data ( ) + s. size ( ) | s. data ( ) + s. size ( ) |
Parameters
| s | - | a std::span that references the user-provided buffer |
Return value
1)
std::
span
<
CharT
>
(
pbase
(
)
, pptr
(
)
)
if
std::ios_base::out
is set in the open mode, or a
std::
span
<
CharT
>
that references the whole underlying buffer otherwise.
2)
(none)
Example
|
This section is incomplete
Reason: no example |
See also
|
replaces or obtains a copy of the associated character string
(public member function of
std::basic_stringbuf<CharT,Traits,Allocator>
)
|
|
|
(C++20)
|
obtains a view over the underlying character sequence
(public member function of
std::basic_stringbuf<CharT,Traits,Allocator>
)
|
|
marks the buffer frozen and returns the beginning pointer of the input sequence
(public member function of
std::strstreambuf
)
|