20
General utilities library
[utilities]
20.7
Variants
[variant]
20.7.12
Hash support
[variant.hash]
🔗
template
<
class
.
.
.
Types
>
struct
hash
<
variant
<
Types
.
.
.
>
>
;
1
#
The specialization
hash
<
variant
<
Types
.
.
.
>
>
is enabled (
[unord.
hash]
) if and only if every specialization in
hash
<
remove_const_t
<
Types
>
>
.
.
.
is enabled
.
The member functions are not guaranteed to be
noexcept
.
🔗
template
<
>
struct
hash
<
monostate
>
;
2
#
The specialization is enabled (
[unord.
hash]
)
.