SearchGeneric

SearchGeneric.kt

data class Person(val name: String, val email: String, val age: Int)

fun search() {
    val henry = Person(name = "Henry", email = "[email protected]", age = 24)
    val robert = Person(name = "Robert", email = "[email protected]", age = 22)
    val tom = Person(name = "Tom", email = "[email protected]", age = 25)

    val listOfPerson = listOf(henry, robert, tom)
    val searchUtil = SearchUtil(list = listOfPerson)
    searchUtil.searchItem(element = henry) {
        println("Search result : $it")
    }
}

class SearchUtil<T>(private val list: List<T>) {
    fun searchItem(element: T, foundItem: (element: T?) -> Unit) {
        val itemFoundList = list.filter {
            it == element
        }
        if (itemFoundList.isNullOrEmpty()) foundItem(null) else
            foundItem(itemFoundList.first())
    }
}

fun main() {
    search()
}