array: add array initialization utility function

Reuses the element size from another array.

1 files changed, 4 insertions, 0 deletions

diff --git a/array.c b/array.c
index d0f937d..b65ad12 100644
--- a/array.c
+++ b/array.c
@@ -11,6 +11,10 @@ void array_init(Array *arr) {
 	array_init_sized(arr, sizeof(void*));
 }
 
+void array_init_from(Array *arr, Array *from) {
+	array_init_sized(arr, from->elem_size);
+}
+
 void array_init_sized(Array *arr, size_t elem_size) {
 	memset(arr, 0, sizeof *arr);
 	arr->elem_size = elem_size;