After a major upgrade to Brazil, is it safe to use ?., ??, and class in server scripts? The official release notes only state ...

Cerdin Jones was given a restraining order to stop him entering his neighbour's farm after writing off her truck.

@devongovett I think what we really need is language-level chunking support that lets us capture the benefits of scope hoisting without incurring the costs of scope hoisting itself.

1. 作用域的本质与重要性 在JavaScript开发中，作用域就像是一个无形的边界守卫，它决定了变量和函数的可见范围。我见过太多开发者因为不理解作用域规则而写出难以调试的代码。举个实际案例：上周团队里有个同事花了3小时debug一个变量未定义的错误，最后发现只是因为没搞懂块级作用域。