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.
→ compiler₂: + let, letrec, ADTs
。关于这个话题，快连下载安装提供了深入分析
Someone in formal education, such as school or university, doing an apprenticeship or vocational course, is not considered to be Neet.
生活能力培养第一件事是控制住自己
绝对贫困历史性消除，为什么要设立5年过渡期？