I would like to add the following: by putting (wrong or correct) solutions on a public list you do much harm to HtDP. It is essential that readers of HtDP follow the instructions of the book. Giving someone else the opportunity to copy/paste a solution of a problem does great harm to the HtDP and may waste years of efforts put into HtDP. When I got access to the solutions of HtDP exercises, I was strictly instructed (and rightly so) to not reveal any substantial material on public forums, just for this reason. Leaning is hard labour, I know, but you can't really learn by copy/paste. Rather on the contrary. You can only learn by solving problems by yourself. Please do not seduce other HtDP readers to quickly pass over an exercise without doing their own homework. And if you get to a point where you can't proceed, many people are willing to help you, provded you do so privately or by asking questions that do not reveal (potential) solutions. Jos
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Jos Koot Sent: domingo, 28 de agosto de 2011 22:48 To: 'cloud van der Merwe' Cc: [email protected]; 'Matthias Felleisen' Subject: Re: [racket] HTDP exersise 12.4.2 I second Matthias. If in furture you have such questions, mail them privately to someone you know who may have an answer. And if you don't have someone like that send it privately to me if you like. I like teaching very much and have much experience in teaching programming and also some experience with helping HtDP students. I have access to the answers of HtDP problems, so I can check that my answers are in line with the intentions of the author. I am retired, but I cannot refrain from doing some teaching. Teaching is not a job. It is a way of life. Jos _____ From: [email protected] [mailto:[email protected]] On Behalf Of Matthias Felleisen Sent: domingo, 28 de agosto de 2011 22:25 To: cloud van der Merwe Cc: [email protected] Subject: Re: [racket] HTDP exersise 12.4.2 On Aug 28, 2011, at 3:54 PM, cloud van der Merwe wrote: Thanks guys, any criticism will be appreciated! Please don't post complete solutions on-line.
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