Some frameworks also allow you to "daisy-chain" traversal functions, meaning you can concatenate traversal commands to one another.
有些框架可以使用“菊花链”遍历函数，表示可以将遍历命令互相连接。
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This means that under ideal situations, you might only need to run the selection once, with the ability to daisy-chain your functions together, or cache the results for future use.