oldk1331 wrote:
>
> My updated patch is here:
>
> https://github.com/oldk1331/fricas/commit/0bf5c58d3cf72fd6429313c62e5c28bf1312451f.patch
>
OK, pleas commit.
> Following similar logic, "nodes" and "leaves" should give error when
> argument is empty; but "leaf?", "child?", "node?" should not give error,
> they should return true when the relation is satisfied and return false
> otherwise (including when argument is empty).
Hmm, IIUC 'nodes' should return empty list if and only if the aggregate
is empty. By definition 'leaves' return those nodes which have no
children, in particular we should get empty list for empty aggregate.
--
Waldek Hebisch
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