dsl-learning.kt

class Calculator {
    private var a = 0
    private var b = 0
    
    fun printResult() {
        println(a + b)
    }

    fun firstNumber(a: Int) {
        this.a = a
    }

    infix fun secondNumber(b:Int) {
        this.b = b
    }
}

fun calculator(block: Calculator.() -> Unit):Unit {
    var c = Calculator()
    c.block()
}

fun main() {
    calculator {
        firstNumber(2)
        secondNumber(3)
        printResult()
    }
}