Question: Are the following two function definitions equivalent? headl [ ] = error No head for empty lists? headl ) = ( head 2 x

Are the following two function definitions equivalent?
headl []= error "No head for empty lists?"
headl )=(
head2x s = case x of error "No head for empty lists!"
(x:-1)x
never
always
sometimes
only for empty lists
Are the following two function definitions

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