15 Apr
2015
15 Apr
'15
8:50 a.m.
Adding to others,
For fmapping left value I suggest using fmapLeft from errors package, for
fmapping both you can use
either (Left . replicate 3) (Right . replicate 3)
14 квіт. 2015 19:48 "Shishir Srivastava"
Hi,
Can someone please explain the difference in outputs of the following two expressions -
--------------
ghci> fmap (replicate 3) (Right "blah") Right ["blah","blah","blah"]
ghci> fmap (replicate 3) (Left "foo") Left "foo"
---------------
Why does 'Right' return a list of Strings whereas 'Left' returns just a String.
Thanks, Shishir
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