Haskell Cast: Conal Elliott on FRP and Denotational Design

Conal Elliott is one of the earliest designers, implementers, and explorers of the space of Functional Reactive Programming. To Conal, FRP as a term is often poorly used as a term as it is precise and not so closely related to the broader general "reactive" programming.

Here Conal describes FRP as he sees it (or Denotational Continuous-Time Programming) both the motivations, the strong need for separation between denotation and implementation, and why continuous time is vital for efficient reactivity.