std::basic_ispanstream<CharT,Traits>::span
std::span<const CharT> span() const noexcept; |
(1) | (since C++23) |
void span( std::span<CharT> s ) noexcept; |
(2) | (since C++23) |
template< class ROS > void span( ROS&& r ) noexcept; |
(3) | (since C++23) |
1) Gets a
span
referencing the written area if
std::ios_base::out
is set in the open mode of the wrapped
std::basic_spanbuf
, or a
span
referencing the underlying buffer otherwise.
2) Makes the wrapped
std::basic_spanbuf
perform I/O on the buffer referenced by
s
.
3) Same as
(2), except that
. This overload participates in overload resolution only if
s
is obtained as if by
std::span<const CharT> cs{std::forward<ROS>(r)};
std::span<CharT> s{const_cast<CharT*>(cs.data()), cs.size()};
. This overload participates in overload resolution only if
ROS
models
borrowed_range
,
std::convertible_to<ROS, std::span<CharT>>
is
false
, and
std::convertible_to<ROS, std::span<const CharT>>
is
true
.
Parameters
s | - | std::span referencing the storage to be use as the new underlying buffer of stream |
r | - | borrowed_range to be use as the new underlying buffer of stream |
Return value
1) A
std::span
referencing the underlying buffer or written area, depending on the open mode of the wrapped
std::basic_spanbuf
.
2-3) (none)
Example
See also
(C++23)
|
obtains or initializes an underlying buffer according to mode (public member function of std::basic_spanbuf<CharT,Traits> ) |
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