std::basic_spanbuf<CharT,Traits>::span
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< cpp | io | basic spanbuf
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std::basic_spanbuf
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basic_spanbuf::span
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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() |
Contents
[edit] Parameters
s
-
a std::span that references the user-provided buffer
[edit] 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)
[edit] Example
This section is incomplete
Reason: no example
Reason: no example
[edit] See also
replaces or obtains a copy of the associated character string
(public member function of
(public member function of
std::basic_stringbuf<CharT,Traits,Allocator>) [edit]
(C++20)
(public member function of
std::basic_stringbuf<CharT,Traits,Allocator>) [edit]