Yup, that's about right.

Java 9 is out, so why can't you at least be on Java 8 common library by now?

int[] evens = new int[50], post5 = new int[45];
Arrays.setAll(evens, i -> i*2);
System.arraycopy(evens, 5, post5, 0, 45);

Obviously there's libraries (even in Java7) that let you do array ranges.

@xsacha Nice👍

Whereas Java is eager and Haskell is lazy, so technically, verbose but calculated on site.

@xsacha I'm not a Java dev, so none of this is obvious to me.

My big worry is that it won't be constexpr. I wouldn't want to spend cycles calculating something known AOT.