Is it possible to access a delegated property after calling the class constructor via the by operator in Kotlin?

Yes, in Kotlin, after calling the class constructor, if a property is delegated using the by operator, it can be accessed as usual. Property delegation is implemented through the ReadOnlyProperty or ReadWriteProperty interface, and the delegate is initialized at the moment of object creation.

Example:

class Example {
    var p: String by Delegate()
}

class Delegate {
    operator fun getValue(thisRef: Any?, property: kotlin.reflect.KProperty<*>): String {
        return "Delegated value"
    }
    operator fun setValue(thisRef: Any?, property: kotlin.reflect.KProperty<*>, value: String) {
        // handle value assignment
    }
}

fun main() {
    val e = Example()
    println(e.p) // Accessing the delegated property after object creation
}

Thus, the delegated property is available immediately after the class instance is created.