Add Dict.filter simplifications

jfmengels / elm-review-simplify

Provides elm-review rules to simplify your Elm code

BSD 3-Clause "New" or "Revised" License

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Closed lue-bird closed 9 months ago

lue-bird commented 9 months ago

As hinted at in #28

Dict.filter f Dict.empty
--> Dict.empty

Dict.filter (\_ _ -> True) dict
--> dict

Dict.filter (\_ _ -> False) dict
--> Dict.empty

Bonus: Correct Evaluate.isAlwaysBool (terrible name and seems unnecessary anyway?), add Set.filter simplifications to summary.