I suspect an autoincorrect incident. Jeremy Siek, he also has a couple compiler books out now (basically the same book, one with Python and one with Racket). h

I suspect an autoincorrect incident. Jeremy Siek, he also has a couple compiler books out now (basically the same book, one with Python and one with Racket). https://wphomes.soic.indiana.edu/jsiek/ https://wphomes.soic.indiana.edu/jsiek/ Essentials of Compilation, both versions have a chapter on gradual typing.