std::experimental::propagate_const<T>:: swap
|
constexpr
void
swap
(
propagate_const
&
pt
)
noexcept
(
/* see below */
)
;
|
(library fundamentals TS v2) | |
Swaps the wrapped pointer with that of
pt
. Let
t_
designate the private data member that is the wrapped pointer-like object, then this function is equivalent to
swap
(
t_, pt.
t_
)
, where the overload resolution for
swap
is performed among
std::swap
and any declaration found by the usual lookup rules, as described in
Swappable
.
The behavior is undefined if lvalues of
T
do not satisfy
Swappable
.
Parameters
| pt | - |
another
propagate_const
object to swap with
|
Exceptions
|
noexcept
specification:
The lookup for the identifier
noexcept
(
noexcept
(
swap
(
t_, pt.
t_
)
)
)
swap
in the exception specification finds overloads described above, and does not find the member function itself, making the exception specification equivalent to C++17
std::is_nothrow_swappable
.
|
(library fundamentals TS v2) |
|
noexcept
specification:
noexcept
(
std::
is_nothrow_swappable_v
<
T
>
)
|
(library fundamentals TS v3) |
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 3413 | LFTSv2 | the exception specification was ill-formed | made well-formed |