Exts.Delta

A system for tracking players that enter and leave a stage, a-la D3.

Implementation detail: This code is hampered by the lack of Elm's type classes. Note the following:

type alias Delta a =

{ entering : List a

, continuing : List a

, leaving : List a

}

A data-structure that maintains the difference list of entering, continuing and leaving players.

empty : Delta a

A default starting state for Deltas.

generation : List a -> Delta a -> Delta a

Update the delta by inspecting a list of players.

krisajenkins/elm-exts/15.0.1