For this purpose, you use the hash class in Ruby, which allows you to create key-value pairs (in what appears to be an array), but then easily reference them later by key.

为此，您可以使用Ruby中的hash类，它允许您创建键值对(类似于数组)，但是随后可以轻松地通过键引用它们。

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Internally, the class maintains a hash table of all pooled objects.

在内部，类负责维护所汇聚的全部对象的哈希表。

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This class builds a hash table of key-value pairs at the class instantiation.

此类在类实例化时构建一个键值对哈希表。

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