This fragmentation hurts portability. Code that performs well on one runtime may behave differently (or poorly) on another, even though it's using "standard" APIs. The complexity burden on runtime implementers is substantial, and the subtle behavioral differences create friction for developers trying to write cross-runtime code, particularly those maintaining frameworks that must be able to run efficiently across many runtime environments.
Author(s): Xiongwei He, Fan-Shun Meng, Yanjing Su, Lijie Qiao, Shigenobu Ogata, Lei Gao
，更多细节参见safew官方版本下载
A shell is a command-driven REPL. You type in a command and view the
这条路不是从教科书里抄来的模式，是把脚踩进泥土里、把优势和短板摆出来之后，拼出来的一条路。
"Often, it's difficult to know if that's related to the injection, or whether they had them originally but weren't assessed properly beforehand."