Add back function to vectors

back() returns the element in the last position without removing it.

1 files changed, 10 insertions, 0 deletions

diff --git a/collections/vector/vector.c b/collections/vector/vector.c
index b8f83de..0b816b7 100644
--- a/collections/vector/vector.c
+++ b/collections/vector/vector.c
@@ -142,6 +142,16 @@ vec *root;
 	return root->base[--root->end];
 }
 
+void* vec_back(root)
+vec *root;
+{
+	if (!root || root->end == 0) {
+		return NULL;
+	}
+
+	return root->base[root->end - 1];
+}
+
 void* vec_index(root, index)
 vec *root;
 int index;