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What was the premiere Scheme programming environment for Scheme circa 1989?

@fogus though i was not there… probably chez, but it was proprietary. otherwise mit scheme

@wingo @fogus I think the answer, then as now, depends very strongly on the definition of ‘premiere’

@wingo @fogus Other candidates that are no longer with us: T (still just about going until 1991, according to JAR’s site), TI PC-Scheme (and the fork by the University of Geneva), MacScheme

@fogus MIT Scheme probably or TI PC Scheme

And I have fond memories of writing a college project on backpropagation in the early ‘90s (the archetypal ‘handwritten numerals’) using it. And discovering after much head-scratching, that yes, I’d implemented it correctly, but no, hadn’t realized it took several hours to train.

@fogus Depending on what you mean by environment, I think Scheme 84, MacScheme, MIT Scheme were probably the most significant ones.