options/value: allow for inspecting default value

1 files changed, 6 insertions, 1 deletions

diff --git a/options/value.hpp b/options/value.hpp
index ccec36a4..2d10a2c8 100644
--- a/options/value.hpp
+++ b/options/value.hpp
@@ -166,6 +166,11 @@ public:
         return detail::value_get_traits<t>::get(val, def);
     }
 
+    t default_value() const
+    {
+        return def;
+    }
+
     operator t() const { return get(); }
 
     void reload() override
@@ -185,7 +190,7 @@ public:
         return &last;
     }
 private:
-    t def;
+    const t def;
 };