
belega
Effective Haskell: Consider adding explanation (p 166, pdf, B1.0)
In the example:
return "4" >>= ioRead
You could consider adding an explanation, like “Remember that return "4"
returns an IO String
, >>=
unwraps that and passes the string value to ioRead
, which reads the string and returns an IO Int
.”
It may just be me getting confused, but I had to think it over twice to see it.
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