Update3

Convenience function for lifting an update function for an inner model and messages, that also returns an additional out parameters into a parent one.

lift :

(model -> submodel)

-> (submodel -> model -> model)

-> (submsg -> msg)

-> (submsg -> submodel -> ( submodel, Cmd submsg, outmsg ))

-> submsg

-> model

-> ( model, Cmd msg, outmsg )

Lifts an update function of type:

update : submsg -> submodel -> ( submodel, Cmd submsg, outmsg )

Into one that returns:

(model, Cmd  msg, outmsg)

eval :

(outmsg -> model -> ( model, Cmd msg ))

-> ( model, Cmd msg, outmsg )

-> ( model, Cmd msg )

Allows the output of an update function that returns type:

(model, Cmd msg, outmsg)

To have its model and out message evaluated in order to produce a new model, and to create more commands. The commands returned will be appended to those passed in using Cmd.batch.

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Update2
Update3
Task.Extra

the-sett/elm-update-helper/1.0.1

Update3

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