Computed Constant feature request

[David Alayachew]

Hello Leyden Dev Team,

I am very excited for the ComputedConstant JEP that has been recently
announced. There are lots of places in my current projects that could use a
feature like this.

Today, for example, I want to lazy load a gigantic list of resources
(>100). However, these resources are not fetched via an index, they are
fetched via a key.

My current data type that I am storing them into is essentially a
Map<MyEnum, LargeList<MyResource>>. I would like to be able to swap out
this map for a ComputedConstant that can give me my LargeList<MyResource>
when I provide it an instance of MyEnum.

I could technically create a mapper that takes in MyEnum, turns it into its
ordinal, and then does something like this.

ComputedConstant
    .of
    (
        MyEnum.values().length,
        i -> fetchLargeListOfMyResource(MyEnum.values()[i])
    )
    ;

But I'd like to avoid that if at all possible. It feels like I would end up
right back into that error-prone territory from before.

Is this feature possible and worth doing as part of this JEP?

Thank you for your time and help!
David Alayachew
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