From 1798fbe3881ec0f4abde416771b88285191cbd16 Mon Sep 17 00:00:00 2001
From: Jonas Knobloch <jonas.knobloch@t-online.de>
Date: Fri, 3 Apr 2026 20:32:02 +0200
Subject: Add helper to count documents

---
 dataset/file.go | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'dataset/file.go')

diff --git a/dataset/file.go b/dataset/file.go
index 081fbdf..242172e 100644
--- a/dataset/file.go
+++ b/dataset/file.go
@@ -37,6 +37,10 @@ func NewFileReader(name, pattern string) (*FileReader, error) {
 	return f, nil
 }
 
+func (f *FileReader) Num() (int, error) {
+	return len(f.shards), nil
+}
+
 func (f *FileReader) Err() error {
 	return f.err
 }
-- 
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