class A(val result: Int, val s: String) { fun foo() { } override fun equals(other: Any?): Boolean{ if (this === other) return true if (other?.javaClass != javaClass) return false other as A if (result != other.result) return false if (s != other.s) return false return true } override fun hashCode(): Int{ var result1 = result result1 += 31 * result1 + s.hashCode() return result1 } }