[optional.nullops]

# 22 General utilities library [[utilities]](./#utilities)

## 22.5 Optional objects [[optional]](optional#nullops)

### 22.5.8 Comparison with nullopt [optional.nullops]

[🔗](#lib:operator==,optional)

`template<class T> constexpr bool operator==(const optional<T>& x, nullopt_t) noexcept;
`

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L5208)

*Returns*: !x[.](#1.sentence-1)

[🔗](#lib:operator%3c=%3e,optional)

`template<class T> constexpr strong_ordering operator<=>(const optional<T>& x, nullopt_t) noexcept;
`

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L5219)

*Returns*: x.has_value() <=> false[.](#2.sentence-1)