coord/base: add clarifying comment to index assertion

2017-08-27 11:37:52 +10:00 · 2017-08-27 11:37:52 +10:00 · 31652ed3a3
commit 31652ed3a3
parent 8f216a0a27
1 changed files with 5 additions and 1 deletions
--- a/coord/base.hpp
+++ b/coord/base.hpp
@ -175,7 +175,11 @@ namespace util::coord {
        KLASS<sizeof...(Indices),T>
        indices (void) const
        {
-            static_assert (all (make_vector ((Indices < S)...)));
+            static_assert (
+                all (make_vector ((Indices < S)...)),
+                "indices must fall within the defined range for the type"
+            );
+
            return KLASS<sizeof...(Indices),T> { this->data[Indices]... };
        }
    };