[erlang-questions] In what order are pattern matching clauses evaluated?
Tue Feb 20 02:22:38 CET 2007
I wish I had looked at that code twice before posting, I wasn't
thinking about the guard. In any case, I'm still curious about the
clause reordering mentioned in the referenced post.
University of Kansas
On 2/19/07, Seth Warn <> wrote:
> While trying out Erlang, I noticed the following factorial function works:
> fac(N) when N > 0 ->
> N * fac(N-1);
> fac(0) -> 1.
> "Ah ha," I said, "the pattern matching is not strictly top-down." Is
> there a resource somewhere that describes how the clauses may/will be
> rearranged? Searching the archive, the closest thing I found was this
> post, which says that the clauses will be grouped by type:
> Seth Warn
> University of Kansas
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