I now, of course, feel silly because <$> is the infix version of fmap; apologies for list-spamming. -vale -- vale cofer-shabica 401.267.8253 On Tue, Dec 12, 2017 at 1:41 PM, Vale Cofer-Shabica < vale.cofershabica@gmail.com> wrote:

Just to add to David's answer, when I find myself in situations like: foo >>= return . bar

hlint helpfully suggests: fmap bar foo

So you could also have: fmap (splitOn ",") $ readFile "data.txt"

-vale

-- vale cofer-shabica 401.267.8253 <(401)%20267-8253>

On Mon, Dec 11, 2017 at 4:24 PM, mike h wrote:

...

Thank you David. Before posting I tried readFile "data.txt" >>= … but got errors as I didn’t use return.!!

Mike

On 11 Dec 2017, at 21:00, David McBride wrote:

splitOn "," <$> readFile "data.txt"

or perhaps

readFile "data.txt" >>= return . splitOn ","

On Mon, Dec 11, 2017 at 3:56 PM, mike h wrote:

...

I have

input <- readFile “data.txt” let input’ = splitOn “,” input ….

How do I make that into just one line?

Thanks

Mike _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

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Personally I prefer <$> (infix fmap) to fmap, but is this confusing to beginners? On Dec 12, 2017 10:42 AM, "Vale Cofer-Shabica" wrote:

Just to add to David's answer, when I find myself in situations like: foo >>= return . bar

hlint helpfully suggests: fmap bar foo

So you could also have: fmap (splitOn ",") $ readFile "data.txt"

-vale

-- vale cofer-shabica 401.267.8253 <(401)%20267-8253>

On Mon, Dec 11, 2017 at 4:24 PM, mike h wrote:

...

Thank you David. Before posting I tried readFile "data.txt" >>= … but got errors as I didn’t use return.!!

Mike

On 11 Dec 2017, at 21:00, David McBride wrote:

splitOn "," <$> readFile "data.txt"

or perhaps

readFile "data.txt" >>= return . splitOn ","

On Mon, Dec 11, 2017 at 3:56 PM, mike h wrote:

...

I have

input <- readFile “data.txt” let input’ = splitOn “,” input ….

How do I make that into just one line?

Thanks

Mike _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners