Help for debuging my code

Language Design
1 
fun main(){
    println("${updateWeather(10)}")
}
fun updateWeather(degrees: Int) {
   val (description : String, color: Int) = when {
        degrees < 10 ->  "cold" to BLUE
        degrees < 25 ->  "milt" to ORANGE
         else ->  "hot" to RED
   }
 }
    // output
Type inference for control flow expression failed. Please specify its type explicitly.
Unresolved reference: BLUE
Unresolved reference: ORANGE
Unresolved reference: RED
2

You need to specify the constants. The compiler doesn’t know what BLUE, ORAGNE or RED is.

1 Like
3

fun main() {

println(“${updateWeather(7)}”)

}

enum class Color {
BLUE, ORANGE, RED
}
fun updateWeather(degrees: Int) {
val (description, color) = when {
degrees < 5 → Pair(“cold”, Color.BLUE)
degrees < 23 → Pair(“mild”, Color.ORANGE)
else → Pair(“hot”, Color.RED)
}
}
error log
no main manifest attribute, in application.jar