Not on the this post topic, though yes - you can have queries similar to LINQ on lists using closures - it is pretty cool. There are plans to add more commands and it is really easy to add your own custom similar commands.
{3 4 5 8}.reject[item.pow2?] // {3, 5}
BadGuy.instances.select[item.armed?] // all bad guys with weapons
To discuss more please go to the …com or the UE4 Plugin thread.