Update particle unit

experimental/units/container/particle.cpp

@@ -214,6 +214,31 @@ TEST_CASE("reset-outputs", "[reset-outputs]")
             std::cout << '\n';
             ++it;
         }
+
+        it = std::begin(c);
+        for(std::size_t i{0}; i<c.size(); ++i)
+        {
+            auto proxy = proxy_type(*it);
+            for(std::size_t ii{0}; ii<proxy.sizeof_outputs(); ++ii)
+            {
+                proxy.outputs(ii) = 0.;
+            }
+            ++it;
+        }
+        it = std::begin(c);
+        for(std::size_t i{0}; i<c.size(); ++i)
+        {
+            meta::repeat(
+              [i](auto const& e) {
+                  using type = std::decay_t<decltype(e)>;
+                  std::cout << e << ' ';
+                  REQUIRE(e == 0.);
+              },
+              meta::sub_tuple(*it, typename proxy_type::range_outputs_type{}));
+            std::cout << '\n';
+            ++it;
+        }
+
     }
 }