DoesHashMapWorkWithNonHashCodeEquals.kt

DoesHashMapWorkWithNonHashCodeEquals.kt

import java.util.UUID


var isEqualsFunctionCalled = false


data class KeyObj(val uuid: UUID = UUID.randomUUID()) {
    override fun equals(other: Any?): Boolean {
        isEqualsFunctionCalled = true
        return super.equals(other)
    }

    override fun hashCode(): Int {
        return uuid.hashCode()
    }
}

fun main() {
    val map = hashMapOf(KeyObj() to "abc")
    map[KeyObj()]
    println("isEqualsFunctionCalled=$isEqualsFunctionCalled")
}