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  "contentMarkdown": "# Update中new struct对象\n\n> [!note] 我的 UWA 问答\n> 本文收录我在 UWA 问答发表的公开回答。问题内容归原提问者；回答保留当时语境，技术结论可能受 Unity 版本、平台和项目条件限制。\n\n## 问题\n\nstruct中包含string字段，如果在Update中new，会不会有gc问题，考虑是否需要用缓存池来解决，目前我测试了一下将struct改成class是肯定有，如果是struct类型，好像没找到\n\n- 提问者：aladdin\n- 提问时间：2021-09-02 18:17:35\n\n## 我的回答\n\n对class进行new是会分配堆内存，但是这个堆内存不一定是string字段造成的。class的实例本身就会占用堆内存，而他的字段会不会造成堆内存分配，取决于new的时候会不会对类型进行实例化。实例化时候给string赋值，如果是直接确定的字符串内容的话，编译器会自动进行缓存优化，只会在第一帧创建字符串分配内存。\n\n至于struct，结构体作为值类型本身不会占用堆内存。对struct进行new会不会分配堆内存，取决于new的时候，他的字段会不会实例化，会不会占用堆内存。如果struct没有写构造函数的话，即使里面有引用类型，在new struct的时候也不会实例化，不会分配堆内存。如果写了构造函数，就要看构造函数里面是否分配堆内存了。string的情况与上文提到的一致。\n\n- 回答时间：2021-09-02 21:21:12\n- 最后更新：2021-09-02 21:21:12\n- 采纳状态：未采纳\n\n## 来源与关系\n\n- 上位集合：[[10-计算机、信息技术与工程/05-游戏图形与运行时/我的UWA问答/我的UWA问答|我的 UWA 问答]]\n- UWA 标签：内存管理\n- 原始问题：[Update中new struct对象](https://answer.uwa4d.com/question/6130343f8f8c8342418ff792)\n- 源页最后更新：2021-09-05 22:32:36\n"
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