The class that is shown in the previous example is mutable .

前面示例中所示的类是可变的。

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See the " Mutable collections" sidebar for more about that.

请参阅侧边栏“可变集合”，了解更多这方面的信息。

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However, if named parameters are given mutable default values, the parameters can act as persistent memories of previous invocations.

然而，如果赋予了命名参数可变的缺省值，那么参数就可以，用作以前调用的持久存储器。

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If an object is mutable , you have to exercise some care when storing a reference to it.

如果对象是可变的，就必须在存储对其的引用时引起注意。

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If you want mutable fields, then use the keyword var.

如果你希望有可变的字段，那么使用var关键字。

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Implementing equality is much simpler when you needn't concern yourself with inherited mutable fields.

如果您不需要关心继承的可变字段，那么实现等同性会较为简单。

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A compiler error will be thrown if a mutable or unrecognized named permission set is used.

如果使用易变或无法辨认的具名使用权限集，将掷回编译器错误。

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Making the message classes immutable and cloning mutable references such as arrays at construction time would have prevented this problem.

使得消息类不可变并在构造时克隆像数组这样的可变引用，就可以防止该问题。

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Is a heterogeneous mutable container, which means it can hold different types of objects and can be modified after it has been created.

是异构可变容器，这意味着它可以存放不同类型的对象且创建后可以修改。

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While mutable containers are very flexible, their dynamic nature can result in a performance hit.

虽然可变容器非常灵活，但它们的动态特性会对性能造成影响。

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The discovery that relativism is true can help each of us individually by revealing that our values are mutable and parochial.

通过揭示价值观的易变性和局限性，我们发现相对主义是正确的，这一发现的确可以帮助到我们每一个人。

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We could have used a val with a mutable type, like ListBuffer.

我们也可以使用val和一个可变的类型，比如ListBuffer。

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The canonical example of code that would want to capture a mutable local would be something like Listing 1

希望捕获易变的局部变量的典型代码示例可能类似于清单1

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A thread can change the state of the mutable object after the test but before the Doer executes.

线程可以在测试之后且Doer执行之前更改可变对象的状态。

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In contrast, lists in Vimscript are mutable and in many ways far more like (references to) anonymous-array data structures.

相反，Vimscript中的列表的序列是可变的，并且在很多情况下类似于匿名数组数据结构。

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The only way to share mutable state is via the Unsafe class which exists only as an escape hatch.

要共享可变状态只能通过Unsafeclass，这个类只是一个安全舱口。

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A mutable variable is declared with the keyword var.

一个可变的变量用关键字var来声明。

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In hindsight, the decision to make Point mutable turned out to be costly to program clarity and performance.

依后见之明，使Point成为可变的这个决定被证明对于程序清晰性和性能是昂贵的代价。

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Because a list is mutable , it can't be used as the key in a dictionary.

因为list是易变的，所以它不能作为dictionary中的键。

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Process-Wide Mutable Shared State Between Application Domains Should Be Eliminated or Use a Constrained Execution Region

应用程序域之间的进程范围的可变共享状态应被清除，或使用受约束执行区域

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Some design problems are easier to solve with mutable objects.

有一些设计问题还是使用易变对象比较容易解决。

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In FP, functions have no side effects and variables are immutable, while in OOP, mutable state and side effects are common, even encouraged.

在FP里，函数没有副作用，变量都是不易变的。而在OOP中，可变状态和副作用都十分常见，甚至是被鼓励的。

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In Java code, data structures are mutable by default, and you must add more code to make them act immutably.

在Java代码中，默认情况下数据结构是可变的，必须添加更多的代码，才能使它们具有不变的行为。

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When more than one thread accesses a mutable variable, all threads must use synchronization, or else some very bad things can happen.

在不只一个线程访问一个互斥的变量时，所有线程都必须使用同步，否则就可能会发生一些非常糟糕的事情。

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Pass-by-copy semantics for mutable serializable objects when running in a single address space.

在单一地址空间中运行时，易变的可序列化对象的Pass-by-copy语义。

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And this all can be done with no mutable state in the client code.

在客户代码中，这些都可以在不使用可变状态的情况下就能做到。

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In embedded systems with no mutable storage, the initrd is the permanent root file system.

在没有存储设备的嵌入式系统中，initrd是永久的根文件系统。

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Which is a mutable sequence type that demonstrates a number of different ways it can be used.

这是一个可变的序列类型，并演示以多种不同方法使用它。

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Field, the object to which it refers may still be mutable .

字段，而它所引用的对象仍可能是可变的。

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