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Matthias Felleisen <matthias@xxxxxxxxxxx> writes: > I am sorry to see that there is such a huge misunderstanding in our own > community. Here we go again. Do they teach condescending at Rice? > 1. Levels of programmers aside, set! and set-field-of-something! are two > different concepts: Could you save pointing out the obvious to your beginning students, instead of to someone who has been in the programming-languages field as long as you have or longer? > The idea of reifying the environment and introducing an invalid modifier > on it doesn't change this. It only emphasizes it. At least for top-level environments, the two forms are equivalent. > If it weren't for set!, Scheme would be a perfect data-oriented language > on top of mathematics (and thus mathematical reasoning). And pray how is set! different from set-field-of-something! in this respect? -- --Per Bothner per@xxxxxxxxxxx http://www.bothner.com/~per/