22
General utilities library
[utilities]
22.5
Optional objects
[optional]
22.5.4
Partial specialization of
optional
for reference types
[optional.optional.ref]
22.5.4.4
Swap
[optional.ref.swap]
🔗
constexpr
void
swap
(
optional
&
rhs
)
noexcept
;
1
#
Effects
: Equivalent to:
swap
(
val
, rhs
.
val
)
.