this is how signals are described in the functional reactive programming world. here is the paper by the guy http://conal.net/papers/push-pull-frp/push-pull-frp

this is how signals are described in the functional reactive programming world. here is the paper by the guy http://conal.net/papers/push-pull-frp/push-pull-frp.pdf http://conal.net/papers/push-pull-frp/push-pull-frp.pdf