From 4e6b1c4a3888aa79bea824fb079f34f1a24e2845 Mon Sep 17 00:00:00 2001
From: Anna Shaleva <shaleva.ann@nspcc.ru>
Date: Tue, 8 Aug 2023 18:29:32 +0300
Subject: [PATCH] examples: extend storage contract

Add method that returns iterator. It's needed for the workshop.

Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
---
 examples/storage/storage.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/examples/storage/storage.go b/examples/storage/storage.go
index 42416dd82..2fe5f7305 100644
--- a/examples/storage/storage.go
+++ b/examples/storage/storage.go
@@ -54,3 +54,9 @@ func Find(value []byte) []string {
 	}
 	return result
 }
+
+// FindReturnIter returns an iterator over key-value pairs with the key that has the specified prefix.
+func FindReturnIter(prefix []byte) iterator.Iterator {
+	iter := storage.Find(ctx, prefix, storage.None)
+	return iter
+}