[plt-scheme] Re: Stream comprehensions

Mark Engelberg wrote:

> Now, I'm trying to move him back to Scheme to continue Htdp; problem
> is, he's been spoiled by some of the niceties of Haskell.

May I ask what you feel he is lacking from HtDP? While my admiration for 
HtDP is more than considerable (I have told several hundred people on 
several occasions that it is the best introductory programming text I 
know of, period), it is not the only route to enlightenment. You may be 
able to set some "subset" puzzles ("How would you do this without using 
X, Y, or Z?") in Haskell to deepen his understanding. Or perhaps work 
through writing an interpreter for a subset of Scheme in Haskell? --PR

(PS I have been told that, because I subscribe to the digest version of 
plt-scheme, and thus have to cut-and-paste my subject lines, I am 
breaking threading. Does anyone have a solution for this inadvertent 
anti-social behaviour? I am using Thunderbird under OS X 10.4, if that 
matters.)