diff --git a/src/Array/Array.c b/src/Array/Array.c
new file mode 100644
index 0000000..f2c7759
--- /dev/null
+++ b/src/Array/Array.c
@@ -0,0 +1,27 @@
+#include "Array.h"
+
+ktId_define(ArrayChar);
+ktId_define(ArrayBool);
+ktId_define(ArrayFloat32);
+ktId_define(ArrayFloat64);
+ktId_define(ArrayInt8);
+ktId_define(ArrayUInt8);
+ktId_define(ArrayInt16);
+ktId_define(ArrayUInt16);
+ktId_define(ArrayInt32);
+ktId_define(ArrayUInt32);
+ktId_define(ArrayInt64);
+ktId_define(ArrayUInt64);
+
+ktId_define(ArrayCharPtr);
+ktId_define(ArrayBoolPtr);
+ktId_define(ArrayFloat32Ptr);
+ktId_define(ArrayFloat64Ptr);
+ktId_define(ArrayInt8Ptr);
+ktId_define(ArrayUInt8Ptr);
+ktId_define(ArrayInt16Ptr);
+ktId_define(ArrayUInt16Ptr);
+ktId_define(ArrayInt32Ptr);
+ktId_define(ArrayUInt32Ptr);
+ktId_define(ArrayInt64Ptr);
+ktId_define(ArrayUInt64Ptr);
diff --git a/src/Array/Array_declare.h b/src/Array/Array_declare.h
index 6d12ead..eae3a69 100644
--- a/src/Array/Array_declare.h
+++ b/src/Array/Array_declare.h
@@ -16,13 +16,13 @@ typedef struct Array_##type{\
 \
 static inline Array_##type Array_##type##_allocValues(uint32 length){\
     return (Array_##type) {\
-        .values=(type##*)malloc(sizeof(type)*length),\
+        .values=(type*)malloc(sizeof(type)*length),\
         .length=length,\
         .allocatedOnHeap=true\
     };\
 }\
 \
-static inline Array_##type Array_##type##_fromBuffer(type##* buffer, uint32 bufferLength, bool allocatedOnHeap){\
+static inline Array_##type Array_##type##_fromBuffer(type* buffer, uint32 bufferLength, bool allocatedOnHeap){\
     return (Array_##type) {\
         .values=buffer,\
         .length=bufferLength,\
diff --git a/src/base/type_system/init.c b/src/base/type_system/init.c
index 729da9f..6d60aea 100644
--- a/src/base/type_system/init.c
+++ b/src/base/type_system/init.c
@@ -42,31 +42,31 @@ void ktDescriptors_initKerepTypes(){
 
 
     // base type arrays
-    kt_register(Array_char,    ktId_ArrayChar,    Array_char_freeValues, NULL);
-    kt_register(Array_bool,    ktId_ArrayBool,    Array_bool_freeValues, NULL);
-    kt_register(Array_float32, ktId_ArrayFloat32, Array_float32_freeValues, NULL);
-    kt_register(Array_float64, ktId_ArrayFloat64, Array_float64_freeValues, NULL);
-    kt_register(Array_int8,    ktId_ArrayInt8,    Array_int8_freeValues, NULL);
-    kt_register(Array_uint8,   ktId_ArrayUInt8,   Array_uint8_freeValues, NULL);
-    kt_register(Array_int16,   ktId_ArrayInt16,   Array_int16_freeValues, NULL);
-    kt_register(Array_uint16,  ktId_ArrayUInt16,  Array_uint16_freeValues, NULL);
-    kt_register(Array_int32,   ktId_ArrayInt32,   Array_int32_freeValues, NULL);
-    kt_register(Array_uint32,  ktId_ArrayUInt32,  Array_uint32_freeValues, NULL);
-    kt_register(Array_int64,   ktId_ArrayInt64,   Array_int64_freeValues, NULL);
-    kt_register(Array_uint64,  ktId_ArrayUInt64,  Array_uint64_freeValues, NULL);
+    kt_register(Array_char,    ktId_ArrayChar,    (freeMembers_t)Array_char_freeValues, NULL);
+    kt_register(Array_bool,    ktId_ArrayBool,    (freeMembers_t)Array_bool_freeValues, NULL);
+    kt_register(Array_float32, ktId_ArrayFloat32, (freeMembers_t)Array_float32_freeValues, NULL);
+    kt_register(Array_float64, ktId_ArrayFloat64, (freeMembers_t)Array_float64_freeValues, NULL);
+    kt_register(Array_int8,    ktId_ArrayInt8,    (freeMembers_t)Array_int8_freeValues, NULL);
+    kt_register(Array_uint8,   ktId_ArrayUInt8,   (freeMembers_t)Array_uint8_freeValues, NULL);
+    kt_register(Array_int16,   ktId_ArrayInt16,   (freeMembers_t)Array_int16_freeValues, NULL);
+    kt_register(Array_uint16,  ktId_ArrayUInt16,  (freeMembers_t)Array_uint16_freeValues, NULL);
+    kt_register(Array_int32,   ktId_ArrayInt32,   (freeMembers_t)Array_int32_freeValues, NULL);
+    kt_register(Array_uint32,  ktId_ArrayUInt32,  (freeMembers_t)Array_uint32_freeValues, NULL);
+    kt_register(Array_int64,   ktId_ArrayInt64,   (freeMembers_t)Array_int64_freeValues, NULL);
+    kt_register(Array_uint64,  ktId_ArrayUInt64,  (freeMembers_t)Array_uint64_freeValues, NULL);
     // base type array pointers
-    kt_register(Array_char*,    ktId_ArrayCharPtr,    Array_char_freeValues, NULL);
-    kt_register(Array_bool*,    ktId_ArrayBoolPtr,    Array_bool_freeValues, NULL);
-    kt_register(Array_float32*, ktId_ArrayFloat32Ptr, Array_float32_freeValues, NULL);
-    kt_register(Array_float64*, ktId_ArrayFloat64Ptr, Array_float64_freeValues, NULL);
-    kt_register(Array_int8*,    ktId_ArrayInt8Ptr,    Array_int8_freeValues, NULL);
-    kt_register(Array_uint8*,   ktId_ArrayUInt8Ptr,   Array_uint8_freeValues, NULL);
-    kt_register(Array_int16*,   ktId_ArrayInt16Ptr,   Array_int16_freeValues, NULL);
-    kt_register(Array_uint16*,  ktId_ArrayUInt16Ptr,  Array_uint16_freeValues, NULL);
-    kt_register(Array_int32*,   ktId_ArrayInt32Ptr,   Array_int32_freeValues, NULL);
-    kt_register(Array_uint32*,  ktId_ArrayUInt32Ptr,  Array_uint32_freeValues, NULL);
-    kt_register(Array_int64*,   ktId_ArrayInt64Ptr,   Array_int64_freeValues, NULL);
-    kt_register(Array_uint64*,  ktId_ArrayUInt64Ptr,  Array_uint64_freeValues, NULL);
+    kt_register(Array_char*,    ktId_ArrayCharPtr,    (freeMembers_t)Array_char_freeValues, NULL);
+    kt_register(Array_bool*,    ktId_ArrayBoolPtr,    (freeMembers_t)Array_bool_freeValues, NULL);
+    kt_register(Array_float32*, ktId_ArrayFloat32Ptr, (freeMembers_t)Array_float32_freeValues, NULL);
+    kt_register(Array_float64*, ktId_ArrayFloat64Ptr, (freeMembers_t)Array_float64_freeValues, NULL);
+    kt_register(Array_int8*,    ktId_ArrayInt8Ptr,    (freeMembers_t)Array_int8_freeValues, NULL);
+    kt_register(Array_uint8*,   ktId_ArrayUInt8Ptr,   (freeMembers_t)Array_uint8_freeValues, NULL);
+    kt_register(Array_int16*,   ktId_ArrayInt16Ptr,   (freeMembers_t)Array_int16_freeValues, NULL);
+    kt_register(Array_uint16*,  ktId_ArrayUInt16Ptr,  (freeMembers_t)Array_uint16_freeValues, NULL);
+    kt_register(Array_int32*,   ktId_ArrayInt32Ptr,   (freeMembers_t)Array_int32_freeValues, NULL);
+    kt_register(Array_uint32*,  ktId_ArrayUInt32Ptr,  (freeMembers_t)Array_uint32_freeValues, NULL);
+    kt_register(Array_int64*,   ktId_ArrayInt64Ptr,   (freeMembers_t)Array_int64_freeValues, NULL);
+    kt_register(Array_uint64*,  ktId_ArrayUInt64Ptr,  (freeMembers_t)Array_uint64_freeValues, NULL);
 
     // base type autoarrs
     kt_register(Autoarr_char,    ktId_AutoarrChar,    ____Autoarr_free_char, NULL);
diff --git a/src/base/type_system/ktDescriptor.h b/src/base/type_system/ktDescriptor.h
index a12facb..4213dd9 100644
--- a/src/base/type_system/ktDescriptor.h
+++ b/src/base/type_system/ktDescriptor.h
@@ -7,12 +7,14 @@ extern "C" {
 #include "../std.h"
 #include "ktId.h"
 
+typedef void (*freeMembers_t)(void*);
+typedef char* (*toString_t)(void* obj, uint32 fmt);
 typedef struct ktDescriptor{
     char* name;
     ktId id;
     uint16 size;
-    void (*freeMembers)(void*); // NULL or function which frees all struct members
-    char* (*toString)(void* obj, uint32 fmt); // NULL or function which generates string representaion of object
+    freeMembers_t freeMembers; // NULL or function which frees all struct members
+    toString_t toString; // NULL or function which generates string representaion of object
 } ktDescriptor;
 
 #if __cplusplus