范围循环具有更多变量

SHORT QUESTION:

Is there a way of doing something like this?

for i := 0; key, value := range something; i++ {
    ...
}

Or do I have to do it like this?

i := 0

for key, value := range something {
    ...
    i++
}

EDITED: QUESTION REAL WORLD REASON:

func parseData(xlFile *xlsx.File, parsed [][]string) [][]string {
    i := 0

    for _, sheet := range xlFile.Sheets {
        for _, row := range sheet.Rows {
            parsed = append(parsed, []string{})

            for _, cell := range row.Cells {
                parsed[i] = append(parsed[i], cell.String())
            }

            i++
        }
    }

    return parsed
}

Could I inline the i declaration in the third for?

You just need to declare var i in right place

func parseData(xlFile *xlsx.File, parsed [][]string) [][]string {

    for _, sheet := range xlFile.Sheets {
        for i, row := range sheet.Rows {
            parsed = append(parsed, []string{})

            for _, cell := range row.Cells {
                parsed[i] = append(parsed[i], cell.String())
            }
        }
    }

    return parsed
}

You can play here https://play.golang.org/p/3XXTuwoUsFw