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
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>
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) |