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Archive of posts published in the category: etudes
Apr
11

Programming Praxis | A collection of etudes, updated weekly, for the education and enjoyment of the savvy programmer

[ I continue working at home. It’s no fun, and less productive than working in my office, but I’m coping. There remains much emergency work to be done related to moving all of our students online. I hope everyone is doing well during this time. ]

A student recently asked for help on a beginning-programmer forum to write a Scheme program that finds the nth item in a linked list, mimicking the list-ref built-in function. He posted his code, which was awful; I won’t repost it here. Instead of engaging him, I sent a private email suggesting that he consult either his professor or his teaching assistant, as his posted code showed several misconceptions about Scheme. He wrote back, saying he was sure there was only one thing wrong with his code and I could easily point it out. I didn’t respond, as there was far more than one thing

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