Disable assert causing duplicated hash calls when NDEBUG is not defined - issue #168

parallel_hashmap/phmap.h

@@ -2218,9 +2218,12 @@ protected:
         PolicyTraits::construct(&alloc_ref(), slots_ + i,
                                 std::forward<Args>(args)...);
         
+#ifdef PHMAP_CHECK_CONSTRUCTED_VALUE
+        // this check can be costly, so do it only when requested
         assert(PolicyTraits::apply(FindElement{*this}, *iterator_at(i)) ==
                iterator_at(i) &&
                "constructed value does not match the lookup key");
+#endif
     }
 
     iterator iterator_at(size_t i) { return {ctrl_ + i, slots_ + i}; }