``` arrow val port = Option fromNullable System getenv PORT kotlinlang #arrow

``` // arrow val port = Option.fromNullable...

sitepodmatt

03/08/2019, 1:05 PM

Copy code

// arrow
    val port = Option.fromNullable(System.getenv("PORT")).flatMap { it ->
        it.toIntOrNull()?.let { Some(it) } ?: None
    }.getOrElse { 8080 }

    // non-arrow
    val port2 = System.getenv("PORT")?.toIntOrNull() ?: 8080

is there any terser way in arrow?

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