Re: [Haskell-cafe] trees and pointers

Or you can get the best of all worlds by combining all three! data User = User { userNext :: IORef (MVar (TVar User))) , userPrev :: IORef (MVar (TVar User))) } On 07/14/10 14:39, Andrew Coppin wrote:

Serguey Zefirov wrote:

...

Use IORef. ;)

PS MVar is better, actually

TVar is better still. ;-)

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