vis

commit ac93a434e2501461030a7a6cd4c851e85333b7c5
parent ae64d69fb623a197214f7f2dbfe41821c90cd62c
Author: Marc André Tanner <mat@brain-dump.org>
Date:   Wed, 19 Apr 2017 09:33:30 +0200

array: implement array_truncate

Diffstat:
M
array.c
 | 
8
++++++++
M
array.h
 | 
2
++

2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/array.c b/array.c
@@ -127,3 +127,11 @@ size_t array_length(Array *arr) {
 size_t array_capacity(Array *arr) {
 	return arr->count;
 }
+
+bool array_truncate(Array *arr, size_t len) {
+	if (len <= arr->len) {
+		arr->len = len;
+		return true;
+	}
+	return false;
+}
diff --git a/array.h b/array.h
@@ -56,5 +56,7 @@ bool array_remove(Array*, size_t idx);
 size_t array_length(Array*);
 /* return the number of elements which can be stored without enlarging the array */
 size_t array_capacity(Array*);
+/* remove all elements at index >= length, keep allocated memory */
+bool array_truncate(Array*, size_t length);
 
 #endif