LearnKotlin - When and Filter

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fun whatShouldIDoToday(
        mood: String,
        weather: String = "sunny",
        temperature: Int = 24): String {

    return when {
        mood == "happy" && weather == "sunny" -> "go for a walk"
        else -> "Stay home and read."
    }
}

whatShouldIDoToday(mood="happy")
go for a walk

whatShouldIDoToday("sulky")
Stay home and read.

val spices = listOf("curry", "pepper", "cayenne", "ginger", "red curry", "green curry", "red pepper" )

spices.filter { it.contains("curry") }.sortedBy { it.length }
[curry, red curry, green curry]

spices.filter { it[0] == 'c' && it[it.length - 1] == 'e' }
[cayenne]

spices.filter { it.startsWith('c') && it.endsWith('e') }
[cayenne]

spices.take(3).filter { it.startsWith('c') }
[curry, cayenne]