diff --git a/array.c b/array.c
index 687d04c..737db67 100644
--- a/array.c
+++ b/array.c
@@ -29,7 +29,20 @@ void array_clear(array_t* array)
     array->align = 0;
 }
 
+static uint array_align(array_t* array, uint count)
+{
+    return (count / array->align + !!(count % array->align)) * array->align;
+}
+
 void array_push(array_t* array, const void* data)
 {
-
+    if (!(array->count % array->align))
+        array_alloc(array, array->count + 1);
+    else array->count++;
+    cu_memcpy(array_last(array), data, array->size);
 }
+
+void array_pop(array_t* array, void* src)
+{
+
+}
\ No newline at end of file
diff --git a/array.h b/array.h
index 32b0742..41d8800 100644
--- a/array.h
+++ b/array.h
@@ -14,6 +14,11 @@ void array_init(array_t* array, uint size, uint align);
 void array_alloc(array_t* array, uint newCount);
 void array_clear(array_t* array);
 
+#define array_at(array, i) ((uint8_t*)(array)->mem + (i)*(array)->size)
+#define array_first(array) array_at(array, 0)
+#define array_last(array) array_at(array, (array)->count - 1)
+
 void array_push(array_t* array, const void* data);
+void array_pop(array_t* array, void* src);
 
 #endif
\ No newline at end of file
diff --git a/cutil.c b/cutil.c
index eaf8578..5fc7e0d 100644
--- a/cutil.c
+++ b/cutil.c
@@ -1,5 +1,9 @@
 #include "cutil.h"
+#include <string.h>
 
 void* (*cu_malloc)(size_t) = CUTIL_MALLOC;
 void* (*cu_realloc)(void*, size_t) = CUTIL_REALLOC;
 void* (*cu_free)(void*) = CUTIL_FREE;
+void* (*cu_memset)(void*,int,size_t) = CUTIL_MEMSET;
+void* (*cu_memcpy)(void*,const void*,size_t) = CUTIL_MEMCPY;
+void* (*cu_memmove)(void*,const void*,size_t) = CUTIL_MEMMOVE;
diff --git a/cutil.h b/cutil.h
index 73df12e..1715391 100644
--- a/cutil.h
+++ b/cutil.h
@@ -7,9 +7,15 @@
 #define CUTIL_MALLOC malloc
 #define CUTIL_REALLOC realloc
 #define CUTIL_FREE free
+#define CUTIL_MEMSET memset
+#define CUTIL_MEMCPY memcpy
+#define CUTIL_MEMMOVE memmove
 
 extern void* (*cu_malloc)(size_t);
 extern void* (*cu_realloc)(void*, size_t);
-extern void* (*cu_free)(void*);
+extern void (*cu_free)(void*);
+extern void* (*cu_memset)(void*,int,size_t);
+extern void* (*cu_memcpy)(void*,const void*,size_t);
+extern void* (*cu_memmove)(void*,const void*,size_t);
 
 #endif
\ No newline at end of file
diff --git a/list.c b/list.c
index 6076cb9..1455e07 100644
--- a/list.c
+++ b/list.c
@@ -29,10 +29,10 @@ void list_add(list_t* list, uint size, void* data)
 {
     uint nodeSize = LIST_NODE_SIZE + size;
     list_node_t* node = (list_node_t*)cu_malloc(nodeSize);
-    memset(node, '\0', nodeSize);
+    cu_memset(node, '\0', nodeSize);
     if (data)
     {
-        memcpy((uint8_t*)node + LIST_NODE_SIZE, data, size);
+        cu_memcpy((uint8_t*)node + LIST_NODE_SIZE, data, size);
     }
 
     list_node_t* last = list->last;