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Sep 7, 2018
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Update upper-type-bounds.md #1141

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3 changes: 2 additions & 1 deletion _tour/upper-type-bounds.md
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Expand Up @@ -44,7 +44,8 @@ val catContainer = new PetContainer[Cat](new Cat)
```

```tut:fail
val lionContainer = new PetContainer[Lion](new Lion) // this would not compile
// this would not compile
val lionContainer = new PetContainer[Lion](new Lion)
```
The `class PetContainer` take a type parameter `P` which must be a subtype of `Pet`. `Dog` and `Cat` are subtypes of `Pet` so we can create a new `PetContainer[Dog]` and `PetContainer[Cat]`. However, if we tried to create a `PetContainer[Lion]`, we would get the following Error:

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