Question

Does anybody know an efficient, quick and clean way to convert Long[] to long[] and vice versa in Java outside the obvious for-loop with (un)box&copy?

Note: This is not about unboxing Long or boxing long. I am explicitly talking about arrays!

“There is no better way than loop and copy” would also be an answer 😉

EDIT:
I am aware of the implications of doing the above and that it is better to avoid it. Just assume, I cannot avoid it and want to do it as smartly as possible without using 3rd party stuff.

Answer 1

There is no better way than loop and copy

The best solution is to avoid converting in the first place. If you are worries about efficiency avoid using Long[] as it is many times larger than long[] If you need to use a collection you can try TLongArrayList which wraps a long[].