How to use case expression for tuple in Haskell?

Question

I have a problem when using case expression in Haskell.

filterSth::[a]->(b,c)->[a]
filterSth (x:xs) (b, c) =
    case (b,c) of
        (1,0) -> ...
        (1,2) -> ...
        ...

can I do something like above ?

Answer 1

Yes, you can do something like the above except that b and c need to have a numeric type if you want to pattern match them against numeric constants.