>If the type of the argument to `close` is a type parameter all types in its type set must be channels with the same element type. It is an error if any of thos

>If the type of the argument to `close` is a type parameter all types in its type set must be channels with the same element type. It is an error if any of those channels is a receive-only channel. That doesn't seem to be true - intuitively, element type doesn't seem relevant at all for `close` since it doesn't affect any elements, and it compiles just fine when using a type set that has two different element types: https://go.dev/play/p/IQjTfea9XXy?v=gotip https://go.dev/play/p/IQjTfea9XXy?v=gotip </nitpick> Seems like a solid documentation improvement! Hopefully this also helps accelerate some of the flexibility-extensions like shared fields (or a personal hope: "any struct type" plz! it's super useful for strongly encouraging safe habits in high level APIs, currently there's no way to say "should not be a primitive type").