From 3a9bd64b60f113f4e0768760e6d7029a41ed64e3 Mon Sep 17 00:00:00 2001
From: gjj <dtouch@foxmail.com>
Date: Thu, 29 Aug 2024 11:23:10 +0800
Subject: [PATCH] add a comment

---
 algoim/polyset.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/algoim/polyset.hpp b/algoim/polyset.hpp
index 9daab9a..1a3eed1 100644
--- a/algoim/polyset.hpp
+++ b/algoim/polyset.hpp
@@ -45,7 +45,7 @@ struct PolySet {
     {
         items.push_back({p.ext(), buff.size(), m});
         buff.resize(buff.size() + p.size());
-        poly(items.size() - 1) = p;
+        poly(items.size() - 1) = p; // 这里做了一个数据深拷贝，这是为什么xarray在调用push_back后可以被释放
     }
 
     size_t count() const { return items.size(); }