When working with delegates, how should I handle s...

# getting-started

[martmists]

When working with delegates, how should I handle situations like this?

class MonoNode : BaseNode() {
    protected val input by input()    // getValue should resolve here; it's a delegate to use the property name
    protected val output by output()  // getValue should not resolve as its value may change over time

    override fun process() {
        // We don't want to call getValue too often in real-time code that needs to be fast!
        // output.getValue should only be called once per process() call
        // input.getValue should only be called in constructor/init
        // Is there a good way to do it without having to store to a variable?

        val x = input[0]   // calls input.getValue
        val y = input[1]   // calls input.getValue
        output[0] = x + y  // calls output.getValue
        output[0] = x + y  // calls output.getValue
    }
}

[Chris Lee]

could be partly solved with the use of lazy to memoize values, such that the ‘expensive’ portion only occurs on the first call.