user-defined iteration using range over func values · golang/go · Discussion #56413

There is no standard way to iterate over a sequence of values in Go. For lack of any convention, we have ended up with a wide variety of approaches. Each implementation has done what made the most sense in that context, but decisions made in isolation have resulted in confusion for users. In the standard library alone, we have archive/tar.Reader.Next, bufio.Reader.ReadByte, bufio.Scanner.Scan, con