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Fix the missing line in the guessing-game.md #31145

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Merged
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Jan 23, 2016
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Fix the missing line in the guessing-game.md #31145

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1 change: 1 addition & 0 deletions src/doc/book/guessing-game.md
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Expand Up @@ -908,6 +908,7 @@ let guess: u32 = match guess.trim().parse() {
```

This is how you generally move from ‘crash on error’ to ‘actually handle the
error’, by switching from `expect()` to a `match` statement. The `Result`
returned by `parse()` is an `enum` like `Ordering`, but in this case, each
variant has some data associated with it: `Ok` is a success, and `Err` is a
failure. Each contains more information: the successfully parsed integer, or an
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