|Pathologically Eclectic Rubbish Lister
Whether this i sthe best way of doing this is an open question, but to pass your array in 200 element chucks, you could use splice. I'm assuming that select_ids() returns a reference to an array.
This will consume the array. If you need to retain the array then make a copy. If the array is big and copying costs too much memory then you would need to use a slice and a pointer.
You will probably need to add a little logic to the calculation of the upper bound of the slice to prevent "Uninitialised values" warnings unless your array is a multiple of 200.
Examine what is said, not who speaks."Efficiency is intelligent laziness." -David Dunham
"When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong." -Richard Buckminster Fuller
If I understand your problem, I can solve it! Of course, the same can be said for you.