[Haskell-cafe] Undo records

Casey Basichis caseybasichis at gmail.com
Sun Jan 6 18:01:44 CET 2013


I am still getting a hang of Haskell.  Sorry if the answer is obvious.

What sorts of packages and approaches should I be looking at if I was
looking to store something like an Undo stack into a database.

Each table would refer to a function.
Each records input and outputs would specify both a table ID and record ID.

The records would also have a data and a Process ID to associate all
functions to a specific process and give them an order.

No records are ever deleted.  Rolling something back is instead a process
of recreating a new, modified graph by taking the old graph from the

I should note that while I can generate some of the boiler parts from
template haskell in advance I'm ultimately using a stage 1 compiler with no
GHCI o template haskell.


Casey James Basichis
Composer - Cartoon Network
caseybasichis at gmail.com
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