[EnumSet] Iterator ctor deduction guide

teslamotors · Dec 7, 2023 · 5517300 · 5517300
1 parent a637074
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diff --git a/include/fixed_containers/enum_set.hpp b/include/fixed_containers/enum_set.hpp
@@ -401,6 +401,10 @@ class EnumSet
     }
 };
 
+template <InputIterator InputIt>
+EnumSet(InputIt first,
+        InputIt last) noexcept->EnumSet<typename std::iterator_traits<InputIt>::value_type>;
+
 template <class K, class Predicate>
 constexpr typename EnumSet<K>::size_type erase_if(EnumSet<K>& c, Predicate predicate)
 {

diff --git a/test/enum_set_test.cpp b/test/enum_set_test.cpp
@@ -218,6 +218,13 @@ TEST(EnumSet, IteratorConstructor)
     static_assert(s1.contains(TestEnum1::FOUR));
 }
 
+TEST(EnumSet, DeducedIteratorConstructor)
+{
+    constexpr std::array INPUT{TestEnum1::TWO, TestEnum1::FOUR};
+    constexpr EnumSet s1(INPUT.begin(), INPUT.end());
+    (void)s1;
+}
+
 TEST(EnumSet, InitializerConstructor)
 {
     constexpr EnumSet<TestEnum1> s1{TestEnum1::TWO, TestEnum1::FOUR};