The main limitation here is that these techniques will not apply to polymorphically-recursive functions. Consider this data type, adapted from the Wikipedia page on polymorphic recursion:
Long-term success，详情可参考新收录的资料
1. 钢筋锚固检测委托单中见证取样人员无委托授权，取样人员未签字。（违反《建设工程质量检测管理办法》（部令第57号）第二十条。）。业内人士推荐新收录的资料作为进阶阅读
You need to watch the modern horror masterpiece His House