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Add foreverCE #89

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18 changes: 18 additions & 0 deletions essence-of-live-coding/src/LiveCoding/Forever.lhs
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@ import LiveCoding.Cell
import LiveCoding.Exceptions
import LiveCoding.CellExcept
import LiveCoding.LiveProgram
import LiveCoding.Exceptions.Finite (commute, Finite)

\end{code}
\end{comment}
Expand Down Expand Up @@ -141,3 +142,20 @@ Let us run it:

\fxerror{``Forever and ever?'' Show graceful shutdown with ExceptT. Have to change the runtime slightly for this.}
\fxnote{Awesome idea: Electrical circuits simulation where we can change the circuits live!}

\begin{comment}
\begin{code}
foreverCE :: (Monad m, Data e, Finite e) =>
e ->
(e -> CellExcept a b m e) ->
Cell m a b
foreverCE e f = foreverE e $ commute $ runCellExcept . f

foreverCE' ::
(Monad m, Data void, Finite void, Data e, Finite e) =>
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@turion turion Feb 26, 2022

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I could avert the constraints on void by plugging in Void instead. Weird it's necessary at all. Have a look again whether I can get rid of them, and write a test just to see whether they are a nuisance.

e ->
(e -> CellExcept a b m e) ->
CellExcept a b m void
foreverCE' e = try . liftCell . foreverCE e
\end{code}
\end{comment}