I have always had feeling, that this style of visual programming would be better suited to functional paradigm. It would be nice to be able to visually plug a

I have always had feeling, that this style of visual programming would be better suited to functional paradigm. It would be nice to be able to visually plug a lambda into higher order function. Bonus points if it has some notion of reactive or data-flow programming built in :-) Is there something like that?