package go_koans

func aboutEnumeration() {
  {
    var concatenated string
    var total int

    strings := []string{"hello", " world", "!"}
    for i, v := range strings {
      total += i
      concatenated += v
    }

    assert(concatenated == __string__) // for loops have a modern variation
    assert(total == __int__)           // which offers both a value and an index
  }

  {
    var totalLength int

    strings := []string{"hello", " world", "!"}
    for _, v := range strings {
      totalLength += len(v)
    }

    assert(totalLength == __int__) // although we may omit either value
  }
}