23 Jan
2009
23 Jan
'09
2:05 p.m.
I noticed that in problem 4, the use of Either is needed, which hasn't been introduced yet. I've gotten stuck on 8/9, and am wondering if there is something needed that hasn't been introduced yet as well? Put another way, can problem 8/9 be done given the parts of the language introduced thus far? Regards, Michael Litchard