Yes, the sugar is just to make chain calls with parameter types possible. The sugar reflects the limitation of the basic of Go generics design. Now they would make the language even more complex for such a small need. In facts, there are more problems in Go generics need to be solved earlier than this: https://go101.org/generics/888-the-status-quo-of-go-custom-g...
package main
//go:fix inline
func foo[T [8]byte | [4]uint16]() {
var v T
var n byte = 1 << len(v) >> len(v)
if n == 0 {
println("T is [8]byte")
} else {
println("T is [4]uint16]")
}
}
func main() {
foo[[8]byte]()
}
The change made in Go 1.22 for 3-clause-for loops is not a new feature. It simply broke backward compatibility and old Go principles. It is much worse than C++'s stuff features.
Go was my favorite language for a long time, and I have written many books and articles about it. However, since the release of Go 1.22 [1], that is no longer the case. Go 1.22 damaged Go's reputation for promoting explicitness and maintaining strong backward compatibility.