How can I get the indexes of elements in a Haskell list -
is there function in haskell returns indexs of elements elemindex in list. example list [1,2,3,4,2,3], looking 2 returns [1,4].
you can use hoogle type of questions. basically, type of function you're looking -- in our case have list [a] , a search , want return of [int] indices -- , search it (in case, first result, elemindices, seems work)
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