[Haskell-beginners] finding the cause of an error (here head: empty list)
ky3 at atamo.com
Sun Mar 31 21:05:05 CEST 2013
On Mon, Apr 1, 2013 at 12:17 AM, David McBride <toad3k at gmail.com> wrote:
> People tend to use pattern matching on lists or case statements on the list.
Yes, and activate -Wall to detect places where the pattern matching
isn't covering all cases.
Modulo the actual exception, head is equivalent to
head (x:xs) = x
Notice the absence of a "head " definition.
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