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drake
drake

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如何对Rust集合类型进行迭代

Rust 的集合类型不能直接进行循环,需要变成迭代器(这里是通过 .iter() 方法),才能用于迭代循环。在目前来看,你会觉得这一点好像挺麻烦,不急,以后就知道这么做的好处所在。
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