page 163: side effect and return type is Unit

alvinj / FunctionalProgrammingSimplified

Notes and projects for my book, “Functional Programming, Simplified"

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Open peteanning opened 5 years ago

peteanning commented 5 years ago

val evenOrOdd = i match {
    case 1 | 3 | 5 | 7 | 9 => println("odd")
    case 2 | 4 | 6 | 8 | 10 => println("even")
}

I think this should just be:

val evenOrOdd = i match {
    case 1 | 3 | 5 | 7 | 9 => "odd"
    case 2 | 4 | 6 | 8 | 10 => "even"
}

If not the type of val evenOrOdd is Unit