kotlin empty map

val emptyMap: Map<String, Int> = emptyMap()

1. emptyMap() is a Kotlin function that creates an empty immutable map.
2. val declares a read-only (immutable) variable.
3. emptyMap is the name of the variable.
4. Map<String, Int> specifies that emptyMap is a map where keys are of type String and values are of type Int.
5. = emptyMap() initializes the emptyMap variable with an empty immutable map of type Map<String, Int>.