[Haskell-beginners] Generate a list of all constructors

Kees Bleijenberg K.Bleijenberg at lijbrandt.nl
Sat Nov 14 18:56:45 UTC 2015

In this piece of code


data Color = RED | BLUE | YELLOW


allColors :: [Color]

allColors = [RED, BLUE, YELLOW]


I have to remeber that if I add a Color, I have to add the color in
allColors too.  

Is there no better way to  add all possible colors in allColors?



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