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Chapter 20.2: use default type parameters to extend a trait (not a type) #4556

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Chapter 20.2: use default type parameters to extend a trait (not a type) #4556

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2 changes: 1 addition & 1 deletion nostarch/chapter20.md
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Expand Up @@ -943,7 +943,7 @@ value of the `Rhs` type parameter instead of using the default of `Self`.

You’ll use default type parameters in two main ways:

1. To extend a type without breaking existing code
1. To extend a trait without breaking existing code
1. To allow customization in specific cases most users won’t need

The standard library’s `Add` trait is an example of the second purpose:
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2 changes: 1 addition & 1 deletion src/ch20-02-advanced-traits.md
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Expand Up @@ -169,7 +169,7 @@ value of the `Rhs` type parameter instead of using the default of `Self`.

You’ll use default type parameters in two main ways:

1. To extend a type without breaking existing code
1. To extend a trait without breaking existing code
2. To allow customization in specific cases most users won’t need

The standard library’s `Add` trait is an example of the second purpose:
Expand Down