If there is more than one server running and the queue is less than 5, the script does some more checking to see if it should terminate an instance.
如果现在运行的服务器超过一个,而队列长度小于5,那么这个脚本就需要进行更多的检查,以决定它是否应该停止一个实例。
Validation is a process of checking whether the instance document satisfies structural, data type, and content constraints specified in the XML schema.
验证就是检查实例文档是否满足在XML模式中指定的结构、数据类型和内容限制的过程。
ValueIs avoids all of these problems by encapsulating what we really want each class to handle separately: checking whether an instance of the class contains the given value.
value Is通过封装我们真正希望每个类单独处理的内容:检查类的一个实例是否包含给定的值,以避开所有这些问题。
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