array: implement array_resize

2 files changed, 11 insertions, 0 deletions

diff --git a/array.c b/array.c
index 8328b06..25f471b 100644
--- a/array.c
+++ b/array.c
@@ -135,3 +135,11 @@ bool array_truncate(Array *arr, size_t len) {
 	}
 	return false;
 }
+
+bool array_resize(Array *arr, size_t len) {
+	if (len <= arr->count) {
+		arr->len = len;
+		return true;
+	}
+	return false;
+}
diff --git a/array.h b/array.h
index b369d68..5664f5a 100644
--- a/array.h
+++ b/array.h
@@ -58,5 +58,8 @@ size_t array_length(Array*);
 size_t array_capacity(Array*);
 /* remove all elements at index >= length, keep allocated memory */
 bool array_truncate(Array*, size_t length);
+/* change length if it is less than the current capacity, newly
+ * accesible elements preserve their previous values */
+bool array_resize(Array*, size_t length);
 
 #endif