validate canons without yatest_common

1 files changed, 30 insertions, 0 deletions

diff --git a/library/cpp/erasure/helpers.h b/library/cpp/erasure/helpers.h
new file mode 100644
index 0000000000..741186322a
--- /dev/null
+++ b/library/cpp/erasure/helpers.h
@@ -0,0 +1,30 @@
+#pragma once
+
+#include "public.h"
+
+namespace NErasure {
+
+// All vectors here are assumed to be sorted.
+
+TPartIndexList MakeSegment(int begin, int end);
+
+TPartIndexList MakeSingleton(int elem);
+
+TPartIndexList Difference(int begin, int end, const TPartIndexList& subtrahend);
+
+TPartIndexList Difference(const TPartIndexList& first, const TPartIndexList& second);
+
+TPartIndexList Difference(const TPartIndexList& first, int elem);
+
+TPartIndexList Intersection(const TPartIndexList& first, const TPartIndexList& second);
+
+TPartIndexList Union(const TPartIndexList& first, const TPartIndexList& second);
+
+bool Contains(const TPartIndexList& set, int elem);
+
+TPartIndexList UniqueSortedIndices(const TPartIndexList& indices);
+
+TPartIndexList ExtractRows(const TPartIndexList& matrix, int width, const TPartIndexList& rows);
+
+} // namespace NErasure
+