main :: IO ()
main = do
res <- try (mapM_ (callProcess "pandoc") [["--help"],["-eoc"],["-exois"],["--help"]]) :: IO (Either SomeException ())
case res of
Right a -> print "done"
Left e -> print "error"
in the above code, some of the argument for the command pandoc are wrong and pandoc will throw errors. but I want my code to continue without stopping there and finish the mapM_
What Exception handling should I use?
The error I have is:
pandoc: unrecognized option `-e'
Try pandoc --help for more information.
"error"
Instead of trying your best to do a whole block of commands, have a block of commands that each try their best. Change try (mapM_ foo bar) into mapM_ (try . foo) bar.
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