[Haskell-cafe] Equivalent of if/then/else for IO Bool?
ithika at gmail.com
Thu Nov 23 16:34:49 EST 2006
Is there some sort of equivalent of the if/then/else construct for use
in the IO monad? For instance the following can get quite tedious:
> do bool <- doesFileExist filename
> if bool
> then sth
> else sth'
Is there a more compact way of writing that? Something akin to:
> condM (doesFileExist filename) (sth) (sth')
Or maybe there's a more sensible way of doing the above that I've
missed. I seem to use endless alternate conditions sometimes and there's
bound to be a better way.
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