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添加extern crate rand;

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Azureki 2018-12-03 19:11:11 +08:00 committed by GitHub
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src/ch02-00-guessing-game-tutorial.md
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@ -349,6 +349,8 @@ rand = "0.4.0"
<span class="filename">文件名: src/main.rs</span> <span class="filename">文件名: src/main.rs</span>
```rust,ignore ```rust,ignore
extern crate rand;
use std::io; use std::io;
use rand::Rng; use rand::Rng;