feedc0de/boost_optional
1
0
Fork 0
forked from boostorg/optional
Code Pull Requests Activity

Different implementation of map and flat_map

Browse Source
This commit is contained in:
Andrzej Krzemienski
2024-08-15 21:41:17 +02:00
parent e360de3da5
commit 411ead088d
2 changed files with 38 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
include/boost/optional/detail/optional_reference_spec.hpp
View File

@@ -168,7 +168,8 @@ public:
bool has_value() const BOOST_NOEXCEPT { return ptr_ != 0; }
template <typename F>
auto map(F f) const -> optional<decltype(f(**this))>
optional<typename optional_detail::result_of<F, reference_const_type>::type>
map(F f) const
{
if (this->has_value())
return f(this->get());
@@ -177,8 +178,8 @@ public:
}
template <typename F>
auto flat_map(F f) const ->
optional<typename optional_detail::optional_value_type<decltype(f(**this))>::type>
optional<typename optional_detail::result_value_type<F, reference_const_type>::type>
flat_map(F f) const
{
if (this->has_value())
return f(get());