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[lambda.git] / topics / _week8_reader_monad.mdwn

diff --git a/topics/_week8_reader_monad.mdwn b/topics/_week8_reader_monad.mdwn
index 557bd2f..9266ab3 100644 (file)
--- a/topics/_week8_reader_monad.mdwn
+++ b/topics/_week8_reader_monad.mdwn
@@ -19,8 +19,8 @@ The starting point was to allow the division function to return an int
 option instead of an int.  If we divide 6 by 2, we get the answer Just
 3.  But if we divide 6 by 0, we get the answer Nothing.  
 
 option instead of an int.  If we divide 6 by 2, we get the answer Just
 3.  But if we divide 6 by 0, we get the answer Nothing.  
 

-The next step was to adjust the other arithmetic functions to know how
-to handle receiving Nothing instead of a (boxed) integer.  This meant
+The next step was to adjust the other arithmetic functions to teach them what to do if they received Nothing instead of a boxed integer.
+This meant

 changing the type of their input from ints to int options.  But we
 didn't need to do this piecemeal; rather, we could "lift" the ordinary
 arithmetic operations into the monad using the various tools provided
 changing the type of their input from ints to int options.  But we
 didn't need to do this piecemeal; rather, we could "lift" the ordinary
 arithmetic operations into the monad using the various tools provided