What is this trickery?

Can some1 clarify how put and get are supposed to work? I tried looking up befunge documentations and everything but i don't understand how they are supposed to work:/

this is pure beauty!

this is exactly same as another kata: http://www.codewars.com/kata/valid-braces/javascript
apart from being translated to different languages...

forgot that Jar.prototype.length there, I originally tried to use it for the pourOut method but soon realised that removing same amount from each would alter the concentrations and just forgot to remove it from the code:/

I think there is a problem with this kata. My code completes all the test cases but when i try to submit it passess all except the empty list, which my code returns an empty string for. The error just gives " Expected: , instead got: , " so i have no idea what to do. I tried to return null and empty arrays but none worked:/

edit. i got it to work, it had to do with the object name being empty instead of just empty array:)
Maybe give better info on the fail event it was really dumb trying to figure what's wrong when i felt it should have worked