><span class="caption">リスト13-26: <code>Config::new</code>のシグニチャをイテレータを期待するように更新する</span></p>
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The standard library documentation for the `env::args` function shows that the
type of the iterator it returns is `std::env::Args`. We’ve updated the
signature of the `Config::new` function so the parameter `args` has the type
`std::env::Args` instead of `&[String]`. Because we’re taking ownership of
`args` and we’ll be mutating `args` by iterating ove