Is there a way to iterate over a slice in reverse in Go?

Question

It would be convenient to be able to say something like:

for _, element := reverse range mySlice {
        ...
}

Answer 1

One could use a channel to reverse a list in a function without duplicating it. It makes the code nicer in my sense.

package main

import (
    "fmt"
)

func reverse(lst []string) chan string {
    ret := make(chan string)
    go func() {
        for i, _ := range lst {
            ret <- lst[len(lst)-1-i]
        }
        close(ret)
    }()
    return ret
}

func main() {
    elms := []string{"a", "b", "c", "d"}
    for e := range reverse(elms) {
        fmt.Println(e)
    }
}