How do I avoid object creation in a Kotlin based on function return value?

Question

I'm learning Kotlin and would like to find out how to avoid creating an object if a function that is called inside an init block returns false. Basically, what I'd like to do is, if the function returns false, I'd throw the user an error and not create the object, but if it returns true, I'd create it. Does anyone know how I could solve this?

For more specific use checkNotNull(fun) it's like check(), Otherwise returns the not null value. — Youn Tivoli
– Youn Tivoli, Commented Mar 28, 2021 at 18:57

Михаил Нафталь · Accepted Answer · 2021-03-28 17:03:55Z

3

You've just described everything yourself:

class MyClass {
    init {
        check(isValid())
    }

    private fun isValid(): Boolean {
        /* ... */
    }
}

answered Mar 28, 2021 at 17:03

Михаил Нафталь

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