diff --git a/include/snipplib/containers/snplib_hmap.h b/include/snipplib/containers/snplib_hmap.h
index 1021f91..e38d177 100644
--- a/include/snipplib/containers/snplib_hmap.h
+++ b/include/snipplib/containers/snplib_hmap.h
@@ -457,37 +457,17 @@ protected:
     inline static std::vector<std::function<bool(KeyT const&, const hmap*)>> _containsFunc{};
 
 
+public:
     // trivial conversional functions
 
     template <typename VT, typename UT>
         requires requires(VT v, UT u) { v = u; }
-    inline static std::function<hmap_expected_t<UT>(VT const&)> trivial_conv_from =
-        [](VT const& val) -> hmap_expected_t<UT> {
-            // inline static std::function<hmap_expected_t<UT>(hmap_expected_t<VT> const&)> trivial_conv_from =
-            // [](hmap_expected_t<VT> const& val) -> hmap_expected_t<UT> {
-            return static_cast<UT>(val);
-            // if (val) {
-            //     return static_cast<UT>(val.value());
-            // } else {
-            //     return val.error();
-            // }
-        };
+    inline static auto trivial_conv_from = [](VT const& val) -> hmap_expected_t<UT> { return static_cast<UT>(val); };
 
     template <typename VT, typename UT>
         requires requires(VT v, UT u) { u = v; }
-    inline static std::function<hmap_expected_t<VT>(UT const&)> trivial_conv_to =
-        [](UT const& uval) -> hmap_expected_t<VT> {
-            // inline static std::function<hmap_expected_t<VT>(hmap_expected_t<UT> const&)> trivial_conv_to =
-            //     [](hmap_expected_t<UT> const& uval) -> hmap_expected_t<VT> {
-            return static_cast<VT>(uval);
-            // if (uval) {
-            //     return static_cast<VT>(uval.value());
-            // } else {
-            //     return uval.error();
-            // }
-        };
+    inline static auto trivial_conv_to = [](UT const& uval) -> hmap_expected_t<VT> { return static_cast<VT>(uval); };
 
-public:
     hmap() = default;
 
     virtual ~hmap()