reference: follow idiom in code snippet
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@ -921,7 +921,7 @@ An example of a function:
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```
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```
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fn add(x: i32, y: i32) -> i32 {
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fn add(x: i32, y: i32) -> i32 {
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return x + y;
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x + y
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}
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}
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```
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```
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