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diff --git a/.clangd/index/file.c.AE428882B365CD9B.idx b/.clangd/index/file.c.AE428882B365CD9B.idx
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diff --git a/include/acl/array.h b/include/acl/array.h
index 523f524..ebe7354 100644
--- a/include/acl/array.h
+++ b/include/acl/array.h
@@ -1,5 +1,8 @@
 #ifndef array_h
 #define array_h
+#include <stddef.h>
+void acl_arraylist_free(void *arraylist);
+void* acl_arraylist_remove(void *arraylist_void, size_t index);
 void* acl_arraylist_create(size_t array_size, size_t sizeof_one_element);
 void* acl_arraylist_append(void *arraylist_void, void *element_void);
 #endif
diff --git a/src/array.c b/src/array.c
index e600969..20b193e 100644
--- a/src/array.c
+++ b/src/array.c
@@ -30,8 +30,27 @@ void* acl_arraylist_append(void *arraylist_void, void *element) {
 	if(arraylist->len == arraylist->cap) {
 		arraylist->cap = arraylist->len + 10;
 		arraylist = realloc(arraylist, arraylist->cap * arraylist->sizeof_one_element + sizeof *arraylist);
+		if(!arraylist) return NULL;
 	}
 	memcpy((char*)(arraylist + 1) + arraylist->sizeof_one_element * arraylist->len, element, arraylist->sizeof_one_element);
 	++arraylist->len;
 	return arraylist+1;
 }
+
+void acl_arraylist_free(void *arraylist) {
+	free((union arraylist_meta*)arraylist-1);
+}
+
+void* acl_arraylist_remove(void *arraylist_void, size_t index) {
+	union arraylist_meta *arraylist = (union arraylist_meta*)arraylist_void - 1;
+	char *arraylist_char = arraylist_void;
+	if(index != arraylist->len - 1) {
+		memcpy(arraylist_char + arraylist->sizeof_one_element * index, arraylist_char + arraylist->sizeof_one_element * (arraylist->len - 1), arraylist->sizeof_one_element);
+	}
+	--arraylist->len;
+	if(arraylist->len < arraylist->cap - 10) {
+		arraylist->cap = arraylist->len;
+		arraylist = realloc(arraylist, arraylist->cap * arraylist->sizeof_one_element + sizeof *arraylist);
+	}
+	return arraylist;
+}