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Asked: 2026-05-30T23:30:21+00:00

Unfortunately, many Template Haskell functions have absolutely no documentation at all. One such function

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Unfortunately, many Template Haskell functions have absolutely no documentation at all. One such function is report. It takes a Bool and a String, and produces a compilation error with the specified string as the error message. Does anybody have any clue what the hell the Bool is for? As best as I can tell, either value does exactly the same thing…

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  1. Editorial Team

    If the Bool is True, an error is reported; if it is False, a “warning” is reported, meaning that the template code will continue to run to collect more “warnings.”

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