[Haskell-cafe] Debugging STM

[John Ky]

Hi,

Does anyone have any advice on how to inspect complex TVar data structures
that may include cycles?  They're opaque as far as Show goes.  And sometimes
I'd like a more comprehensive view of my data structures at the ghci prompt
rather than the dribs and drabs I get by typing "x <- atomically $ readTVar
var" and the like all the time.  Also, do TVars have a printable identity
for debugging purposes?

Thanks

-John
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