Tighten type of state in next and done of StepRange and UnitRange #9670
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It looks like this causes a problem for non-numeric ranges, e.g. of Chars. |
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Indeed, I also hadn't considered ranges of user defined types which are not Reals. This causes more problems than it fixes so never mind. |
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Making these arguments more specific prevents ambiguity warnings when defining new ierators over AbstractArray, as in #8432. cc @timholy