类型系统作为编程语言的基础，通过一系列规则检查程序的一致性，不仅揭示表面的疏忽，更能暴露深层次的概念错误。本文探讨了类型系统如何工作，并将其划分为两大类编程语言世界，强调其在确保代码质量和预防类型错误方面的重要性。
类型系统是编程语言的基石
Type systems are generally formulated as collections of rules for checking the “con- sistency” of programs.
This kind of checking exposes not only trivial mental slips, but also deeper conceptual errors, which frequently manifest as type errors.
A useful—though rough—distinction divides the world of programming lan- guages into two parts:
《
Type Systems
for Programming Languages
》
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