Genericall​y compacting arrays using a test function

Question

Is there a way to do the following (or at least this stuff in the box) generically. Is there a name for this algorithm?
Essentially I want to reduce an array to just its elements that pass a test. The test can just be another array of booleans which say whether the array passed the test or not. I feel like I write this code a lot and it bothers me that I write it so much.
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Answer 1

Thanks all for the responses.
I find it so frustrating that Labview sometimes can't even do things that are so simple in other languages (see like http://docs.python.org/2/library/functions.html#fi​lter) or that can be trivial to implement in other languages (see C++). 
My hope was that no variants would be necessary at all as they add clutter and bypass compile time type checking. Clearly one way to make functions like this generic is to use variant data. I was kinda hoping to avoid it all together. The reason I wrote out the function the way I did is because it's space and time efficient in more cases, generally.
It's true you're probably fine doing this in one loop (using a preallocated array with the same size as the input array). Consider though that if you want to avoid making a full sized copy of the array, generally, seperating out the loops is needed. Labview doesn't make a copy of any array data until it passes the data into the test function (and if the test function isn't even a vi then it doesn't make a copy at all) which it will only do one or P at a time, depending. Then the only new allocation of significance is the allocation by initialize array, which in many cases will be substantially smaller than the input array.
This time the performance doesn't matter. But I'd sure like to make generic functions like these that could be generally performant. One day maybe.