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Perform small corrections on the variance feature specification #4752

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Perform small corrections on the variance feature specification #4752

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5 changes: 2 additions & 3 deletions working/0524-variance/feature-specification.md
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Expand Up @@ -98,7 +98,6 @@ as follows:
- `Si <: Ui` and `Ui <: Si`, and `vi` is `inout`.



### Variance Rules

We say that a type parameter of a generic class, mixin class, enum, mixin,
Expand Down Expand Up @@ -181,8 +180,8 @@ following conditions is true:

It is a compile-time error if a variance modifier is specified for a type
parameter declared in the type parameter list of a declaration of an
extension, a generic function or method, an extension type, or a type
alias; or in the type parameter list of a generic function type.
extension, a generic function or method, or a type alias; or in the type
parameter list of a generic function type.

*Variance is not relevant to extension declarations, because there is no
notion of subsumption. Each usage will be a single call site, and the value
Expand Down