There's no doubt that the restriction to only capturing immutable state from the lexical context is quite irritating to programmers.

毫无疑问，仅从词法上下文捕获不变的状态这一限制，令程序员非常不满意。

youdao

This pattern requires that the value being published be effectively immutable — that its state not change after publication.

这个模式要求被发布的值是有效不可变的——即值的状态在发布后不会更改。

youdao

If you have an immutable object, you must set whatever state it will contain in the constructor.

如果您有一个不可变对象，则必须要在构造函数中设置该对象将包含的任何状态。

youdao