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rust-course/assets/rustlings-zh/exercises/variables
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README.md
Escape

变量（Variables）

在 Rust，变量默认是不可变的. 不可变意味着当一个值被绑定到某个名字上，你就不能再对这个值做出更改。 当然，你可以通过在变量名前添加 mut 来使它们变得可变。

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