diff --git a/include/blt/std/utility.h b/include/blt/std/utility.h
index 60c1a43..1cc9fcc 100644
--- a/include/blt/std/utility.h
+++ b/include/blt/std/utility.h
@@ -20,6 +20,8 @@
 #define BLT_UTILITY_H
 
 #include <optional>
+#include <blt/std/string.h>
+#include <regex>
 
 #if defined(__GNUC__)
     
@@ -53,6 +55,22 @@ namespace blt
 
 namespace blt
 {
+    template<typename T>
+    static BLT_CPP20_CONSTEXPR inline std::string type_string()
+    {
+        return demangle(typeid(T).name());
+    }
+    
+    template<typename T>
+    static BLT_CPP20_CONSTEXPR inline std::string extract_types()
+    {
+        auto name = demangle(typeid(T).name());
+        
+        std::regex replace("(__cxx[0-9]*)::");
+        
+        return std::regex_replace(name, replace, "");
+    }
+    
     template<typename TYPE_ITR>
     class enumerator
     {
@@ -69,36 +87,38 @@ namespace blt
                     size_t index = 0;
                     TYPE_ITR current;
                 public:
-                    explicit iterator(TYPE_ITR current): current(current)
-                    {};
+                    explicit iterator(TYPE_ITR current): current(std::move(current))
+                    {}
                     
                     iterator& operator++()
                     {
-                        index++;
+                        ++index;
                         ++current;
                         return *this;
                     }
                     
-                    iterator operator++(int)
+                    bool operator==(iterator other) const
                     {
-                        iterator retval = *this;
-                        ++(*this);
-                        return retval;
+                        return current == other.current;
                     }
                     
-                    bool operator==(iterator other) const
-                    { return current == other.current; }
-                    
                     bool operator!=(iterator other) const
-                    { return !(*this == other); }
+                    {
+                        return current != other.current;
+                    }
                     
                     std::pair<size_t, const reference> operator*() const
                     {
                         return {index, *current};
                     };
+                    
+                    std::pair<size_t, reference> operator*()
+                    {
+                        return {index, *current};
+                    };
             };
             
-            explicit enumerator(TYPE_ITR begin, TYPE_ITR end): begin_(begin), end_(end)
+            explicit enumerator(TYPE_ITR begin, TYPE_ITR end): begin_(std::move(begin)), end_(std::move(end))
             {}
             
             iterator begin()
@@ -117,7 +137,13 @@ namespace blt
     };
     
     template<typename T>
-    static inline enumerator<typename T::iterator> enumerate(T container)
+    static inline auto enumerate(const T& container)
+    {
+        return enumerator{container.begin(), container.end()};
+    }
+    
+    template<typename T>
+    static inline auto enumerate(T& container)
     {
         return enumerator{container.begin(), container.end()};
     }
@@ -134,39 +160,22 @@ namespace blt
 #endif
     
     template<typename T>
-    void BLT_ATTRIB_NO_INLINE black_box_ref(const T& val)
+    void BLT_ATTRIB_NO_INLINE black_box(const T& val)
     {
-        volatile void* hell;
+        static volatile void* hell;
         hell = (void*) &val;
         (void) hell;
     }
     
     template<typename T>
-    void BLT_ATTRIB_NO_INLINE black_box(T val)
+    const T& BLT_ATTRIB_NO_INLINE black_box_ret(const T& val)
     {
-        volatile void* hell2;
-        hell2 = (void*) &val;
-        (void) hell2;
-    }
-    
-    template<typename T>
-    const T& BLT_ATTRIB_NO_INLINE black_box_ref_ret(const T& val)
-    {
-        volatile void* hell;
+        static volatile void* hell;
         hell = (void*) &val;
         (void) hell;
         return val;
     }
     
-    template<typename T>
-    T BLT_ATTRIB_NO_INLINE black_box_ret(T val)
-    {
-        volatile void* hell2;
-        hell2 = (void*) &val;
-        (void) hell2;
-        return val;
-    }
-    
 }
 
 #endif //BLT_UTILITY_H
diff --git a/tests/src/utility_test.cpp b/tests/src/utility_test.cpp
index f1dbe49..b0879dc 100644
--- a/tests/src/utility_test.cpp
+++ b/tests/src/utility_test.cpp
@@ -18,6 +18,7 @@
 #include <blt/std/utility.h>
 #include <blt/std/format.h>
 #include <blt/std/logging.h>
+#include <blt/profiling/profiler_v2.h>
 #include <utility_test.h>
 #include <vector>
 #include <cstring>
@@ -48,17 +49,56 @@ int testFunc(int a, int b)
     return a;
 }
 
-void testEnumerate(const std::vector<std::string>& test)
+template<typename T>
+void e1(const T& test)
 {
+    BLT_START_INTERVAL("Enumeration (" + blt::type_string<T>().substr(0, 30) + ":" + std::to_string(test.size()) + ")", "blt::enumerate");
     for (auto pair : blt::enumerate(test))
     {
-        std::cout << pair.first << ": " << pair.second << std::endl;
+        blt::black_box(pair);
     }
+    BLT_END_INTERVAL("Enumeration (" + blt::type_string<T>().substr(0, 30) + ":" + std::to_string(test.size()) + ")", "blt::enumerate");
+}
+
+template<typename T>
+void e2(const T& test)
+{
+    BLT_START_INTERVAL("Enumeration (" + blt::type_string<T>().substr(0, 30) + ":" + std::to_string(test.size()) + ")", "for index");
+    for (size_t i = 0; i < test.size(); i++)
+    {
+        const auto& v = test[i];
+        blt::black_box(std::pair{i, v});
+    }
+    BLT_END_INTERVAL("Enumeration (" + blt::type_string<T>().substr(0, 30) + ":" + std::to_string(test.size()) + ")", "for index");
+}
+
+template<typename T>
+void e3(const T& test)
+{
+    BLT_START_INTERVAL("Enumeration (" + blt::type_string<T>().substr(0, 30) + ":" + std::to_string(test.size()) + ")", "for range");
+    size_t counter = 0;
+    for (const auto& s : test)
+    {
+        blt::black_box(std::pair{counter, s});
+        ++counter;
+    }
+    BLT_END_INTERVAL("Enumeration (" + blt::type_string<T>().substr(0, 30) + ":" + std::to_string(test.size()) + ")", "for range");
+}
+
+template<typename T>
+void testEnumerate(const T& test)
+{
+    e1(test);
+    e2(test);
+    e3(test);
+    BLT_PRINT_PROFILE("Enumeration (" + blt::type_string<T>().substr(0, 30) + ":" + std::to_string(test.size()) + ")");
+    BLT_TRACE(blt::type_string<T>());
+    BLT_TRACE(blt::extract_types<T>());
 }
 
 void getfucked()
 {
-    BLT_ASSERT(false);
+    //BLT_ASSERT(false);
 }
 
 void fuckered()
@@ -87,8 +127,6 @@ void blt::test::utility::run()
     tableTest.addRow({"Sleeping Together (Sexual)", "10,000"});
     tableTest.addRow({"Relationship (I would do anything for you)", "1,000,000,000,000"});
     
-    testEnumerate(tableTest.createTable(true, true));
-    
     printLines(tableTest.createTable(true, true));
     
     blt::string::BinaryTreeFormatter::TreeFormat format;
@@ -224,6 +262,16 @@ void blt::test::utility::run()
     tableQ4i2.addRow({"Exit (10)", "{a + b, a * b, a - b}", " -- "});
     
     printLines(tableQ4i2.createTable(true, true));
-
+    
+    for (int gensize = 1; gensize < 8; gensize++){
+        size_t size = static_cast<size_t>(std::pow(10, gensize));
+        
+        std::vector<std::string> str;
+        for (size_t i = 0; i < size; i++)
+            str.push_back(std::to_string(i));
+        
+        testEnumerate(str);
+    }
+    
     fuckered();
 }