// 易错点2：漏写stack.length判断 → 栈空时访问stack[-1]会报错
The rewrite engine is an absolutely brilliant invention by John Brant and Don Roberts, introduced with the Refactoring Browser (see “A Refactoring Tool for Smalltalk”, 1997). It gives us AST-level matching and rewriting with astonishing power.，推荐阅读旺商聊官方下载获取更多信息
，这一点在爱思助手下载最新版本中也有详细论述
（二）依法应当由行政机关处理的行政争议。。heLLoword翻译官方下载对此有专业解读
Function Graphs