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book: update example patterns to be more clear #35465

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Aug 10, 2016
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book: update example patterns to be more clear #35465

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12 changes: 6 additions & 6 deletions src/doc/book/patterns.md
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Original file line number Diff line number Diff line change
Expand Up @@ -109,14 +109,14 @@ struct Point {
y: i32,
}

let origin = Point { x: 0, y: 0 };
let point = Point { x: 2, y: 3 };

match origin {
match point {
Point { x, .. } => println!("x is {}", x),
}
```

This prints `x is 0`.
This prints `x is 2`.

You can do this kind of match on any member, not only the first:

Expand All @@ -126,14 +126,14 @@ struct Point {
y: i32,
}

let origin = Point { x: 0, y: 0 };
let point = Point { x: 2, y: 3 };

match origin {
match point {
Point { y, .. } => println!("y is {}", y),
}
```

This prints `y is 0`.
This prints `y is 3`.

This ‘destructuring’ behavior works on any compound data type, like
[tuples][tuples] or [enums][enums].
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