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Rollup merge of #22368 - thiagooak:book-arity, r=steveklabnik

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#21568
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Manish Goregaokar 2015-02-16 11:27:43 +05:30
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src/doc/trpl/compound-data-types.md
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@ -47,7 +47,8 @@ This pattern is very powerful, and we'll see it repeated more later.
There are also a few things you can do with a tuple as a whole, without There are also a few things you can do with a tuple as a whole, without
destructuring. You can assign one tuple into another, if they have the same destructuring. You can assign one tuple into another, if they have the same
arity and contained types. contained types and arity. Tuples have the same arity when they have the same
length.
```rust ```rust
let mut x = (1, 2); // x: (i32, i32) let mut x = (1, 2); // x: (i32, i32)