查询词典 mutable

They are similar to Perl hashes and can be generally considered as mutable hash tables.

它与Perl中的哈希类型相似，通常被认为是可变的哈希表。

It is not safe to modify the sequence being iterated over in the loop this can only happen for mutable sequence types

在迭代过程中修改迭代序列不安全（只有在使用链表这样的可变序列时才会有这样的情况）。

In the fullest sense of the word, it is a continuously evolving concept paralleling the mutable processes of nature.

就字面的意义来看，它是个持续性的进化概念，和自然界善变的过程相对应。

If a class denes mutable objects and implements a cmp or eq method, it should not implement hash, since the dictionary implementation requires that a key's hash value is immutable (if the object's hash value changes, it will be in the wrong hash bucket).

如果类定义的是可变对象并且实现了 cmp或 eq方法，它就不应该实现 hash，因为字典实现一个散列表的键值是不可变的(如果对象的散列值改变了，它会放在错误的散列表位置中)。

I can do simple painting, carpentry and plumbing.

我能做简单的油漆、木工和修水管等工作。

The motivations, notations and outline of this work are also given in this chapter.

从这个意义上讲，这些时滞是无害的。然后用实例说明这三个定理的应用和互不包含性。