std::experimental::optional<T>:: operator bool
From cppreference.com
<
cpp
|
experimental
|
optional
C++
Experimental
| Technical Specification | ||||
| Filesystem library (filesystem TS) | ||||
| Library fundamentals (library fundamentals TS) | ||||
| Library fundamentals 2 (library fundamentals TS v2) | ||||
| Library fundamentals 3 (library fundamentals TS v3) | ||||
| Extensions for parallelism (parallelism TS) | ||||
| Extensions for parallelism 2 (parallelism TS v2) | ||||
| Extensions for concurrency (concurrency TS) | ||||
| Extensions for concurrency 2 (concurrency TS v2) | ||||
| Concepts (concepts TS) | ||||
| Ranges (ranges TS) | ||||
| Reflection (reflection TS) | ||||
| Mathematical special functions (special functions TR) | ||||
| Experimental Non-TS | ||||
| Pattern Matching | ||||
| Linear Algebra | ||||
| std::execution | ||||
| Contracts | ||||
| 2D Graphics |
std::experimental::optional
| Member functions | ||||
| Observers | ||||
|
optional::operator bool
|
||||
| Modifiers | ||||
| Non-member functions | ||||
| Helper classes | ||||
| Helper objects | ||||
|
constexpr
explicit
operator
bool
(
)
const
noexcept
;
|
(library fundamentals TS) | |
Checks whether * this contains a value.
Parameters
(none)
Return value
true if * this contains a value, false if * this does not contain a value.
Retrieved from "
https://en.cppreference.com/mwiki/index.php?title=cpp/experimental/optional/operator_bool&oldid=93213
"