@servant_of_the_anime_avatars Set builder notation, while neccesary and something I use often, always makes me go cross eyed, even when it conveys simple sets.
@servant_of_the_anime_avatars NVM I see what you are saying.. YOUR example is backwards.. and yea it is.. though i do think the standard way of doing it feels backwards too.
Normally you have some set of things on the left of | and then some "filter" or conditions for inclusion on the right.. which still makes me go dizzy sometimes but not as bad as your bastardized form :)