[Haskell-beginners] A simple function

[Ezequiel Hernan Di Giorgi]

Hallo liebe Leute. Hola gente. I'm starting with Haskell and i have some
problems:

*intercalate :: [t] -> [t] -> [t]*
*intercalate [a,b] [c,d] = [a,c,b,d]*
*intercalate (_) (_) = error "JOJO u cant do this"*


Are there any form to restrict the parmaters that only allow to call the
function *intercalate* with two arrays of two elements, in compilation
time? Cause i cant write* intercalete :: [t,t] -> [t,t]->[t,t,t,t]*.

Sorry for my bad english. I'm Argentinean.

Thanks!
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