```fun main() { val map = mapOf<String, An...

# arrow

[sitepodmatt]

fun main() {

    val map = mapOf<String, Any?>(
        "color" to "red"
    )

    val parsedColor : Either<MappingError, String> =
        Option.fromNullable(map)
            .keyMap<String>("color")
            .bimap({ it }, { it.toUpperCase() })
            .bimap({ it }, { "it-it" })

    println(parsedColor)