val nums = Seq(1,2,3)

val letters = Seq('a', 'b', 'c')

val res = for {

    n <- nums

    c <- letters

} yield (n, c)

for ((name, count) <- names.zipWithIndex) {

    println(s"$count is $name")

}

for (i <- 1 to 3) println(i)

for {

    i <- 1 to 10

    if i < 4

} println(i)

for (i <- 0 until names.length) {

    println(s"$i is ${names(i)}")

}

for {

    i <- 1 to 10

    if i > 3

    if i < 6

    if i % 2 == 0

} println(i)

for (i <- 1 to 10 if i < 4) println(i)

val out = for (e <- names) yield e.capitalize

val out = names.map(_.capitalize)

val names = Seq("chris", "ed", "maurice")

val nums = Seq(1, 2, 3)

for (n <- names) println(n)

for (n <- names) println(n.capitalize)    

for (n <- names) {

    // imagine this requires several lines

    println(n.capitalize)

}