diff --git a/a.out b/a.out
new file mode 100755
index 0000000..8d8a0f5
Binary files /dev/null and b/a.out differ
diff --git a/libkeke_array.c b/libkeke_array.c
index 7f814fe..30fda9b 100644
--- a/libkeke_array.c
+++ b/libkeke_array.c
@@ -9,6 +9,13 @@
 #include "libkeke_utils.h"
 #include "libkeke_array.h"
 
+typedef struct {
+	size_t type_size;
+	size_t len;
+	size_t max_len;
+	void *content;
+} KekeArray;
+
 #define ARRAY_GET(array, i) ((array)->content + (array)->type_size * (i))
 
 KekeArray *keke_array_alloc(size_t initial_len, size_t type_size) {
diff --git a/test_array.c b/test_array.c
index 5ff0f89..dd3da74 100644
--- a/test_array.c
+++ b/test_array.c
@@ -7,19 +7,19 @@
 
 #define ARRAY_LEN 10
 
-void set(void *, size_t index, struct KekeArray *array) {
+void set(void *, size_t index, KekeArray *array) {
     keke_array_set(array, ARRAY_LEN - index - 1, &index);
 }
 
-void output(void *i, size_t, struct KekeArray *) {
+void output(void *i, size_t, KekeArray *) {
     printf("%d, ", *(int *)i);
 }
 
-void sub4(void *i, size_t, struct KekeArray *) {
+void sub4(void *i, size_t, KekeArray *) {
 	*(int *)i -= 4;
 }
 
-bool heart(void *i, size_t, struct KekeArray *) {
+bool heart(void *i, size_t, KekeArray *) {
 	return *(int *)i < 3;
 }
 
@@ -30,7 +30,7 @@ void add(void *vx, void *vacc) {
 }
 
 int main(void) {
-	struct KekeArray *array = keke_array_alloc(ARRAY_LEN, sizeof(int));
+	KekeArray *array = keke_array_alloc(ARRAY_LEN, sizeof(int));
 
     puts("Expected value:\n0");
     printf("%d", *(int *)keke_array_get(array, 0)); //initialized to 0
@@ -41,7 +41,7 @@ int main(void) {
     keke_array_foreach(array, output);
 	puts("\n");
 
-	struct KekeArray *array2 = keke_array_yoink(array, 2, 4);
+	KekeArray *array2 = keke_array_yoink(array, 2, 4);
     puts("Expected value:\n7, 6, 5, 4,");
     keke_array_foreach(array2, output);
 	puts("\n");
@@ -67,7 +67,7 @@ int main(void) {
     keke_array_foreach(array2, output);
 	puts("\n");
 
-    struct KekeArray *array3 = keke_array_clone(array2);
+    KekeArray *array3 = keke_array_clone(array2);
     keke_array_plop(array2, 1, array3); //array3 is freed
     puts("Expected value:\n7, 7, 6, 5, 6, 5,");
     keke_array_foreach(array2, output);
@@ -115,7 +115,7 @@ int main(void) {
     puts("Expected value:\nTrue, False");
     printf("%s, %s\n\n", BOOL_PRETTY(h), BOOL_PRETTY(g));
 
-	struct KekeArray *array4 = keke_array_filter(array2, heart);
+	KekeArray *array4 = keke_array_filter(array2, heart);
     puts("Expected value:\n2, 2, 1, 2,");
 	keke_array_foreach(array4, output);
 	puts("\n");