Dart 中的 null 安全性有什么意义？

Question

空值安全点是否可以防止意外将null分配给变量，然后再执行类似nullable_variable.foo()之类的操作，这会导致运行时错误？

Answer 1

Yes :

With null safety, your runtime null-dereference errors turn into edit-time analysis errors.

It means that a lingering problem that would otherwise become known only when its already too late will turn into an error that you get while you are developing, so you will know about it and can fix it before it ever reaches a customer.