-: [[nodiscard]] as appropriate

src/entt/entity/group.hpp

@@ -68,7 +68,7 @@ public:
         return operator*();
     }
 
-    constexpr iterator_type base() const noexcept {
+    [[nodiscard]] constexpr iterator_type base() const noexcept {
         return it;
     }
 

src/entt/entity/storage.hpp

@@ -189,7 +189,7 @@ public:
         return {*std::get<It>(it), *std::get<Other>(it)...};
     }
 
-    constexpr iterator_type base() const noexcept {
+    [[nodiscard]] constexpr iterator_type base() const noexcept {
         return std::get<It>(it);
     }
 

src/entt/entity/view.hpp

@@ -136,7 +136,7 @@ struct extended_view_iterator final {
         return operator*();
     }
 
-    constexpr iterator_type base() const noexcept {
+    [[nodiscard]] constexpr iterator_type base() const noexcept {
         return it;
     }