How to get() specific element from HashSet? Kotlin

Xfce4 :

Assume myHashSet = HashSet<SomeClass> where SomeClass.hashcode () = someField.hashcode()

How can I return an element with the specified hashcode, i.e:

myHashSet.getElementWithHashCode((other as SomeClass).someField.hashcode())

The element inside the HashSet and other are different objects with different property values except someField value.

It is weird that there is no such function in HashSet. No one needed that before? What is the quickest way around?

Malte Hartwig :

I don't know whether this could you in your case, it would depends on whether it used hashCode or equals internally. Some sources online that have a similar problem are looking for an equals-based solution.

Anyway, you can use built-in functions like find or first to implement it yourself:

fun <E> HashSet<E>.findByHashCode(other: E): E? = firstOrNull { it.hashCode() == other.hashCode() }