[r6rs-discuss] Comparison procedures' number of arguments

[David Van Horn]

Ken Dickey wrote:
> When I look at srfi-32 code [sorting, retracted], SCIP, Scheme and the Art of 
> Programming, Concrete Abstractions, ..., grep for used of (< n) in code 
> [legal in Chez, Gambit, Ikarus -- which disallow (<)] I have not yet found a 
> use of the form (< n).

Just because there are no syntactic occurrences doesn't mean < is not 
applied to zero or one arguments.  I bet similarly you cannot find any 
occurrences of (+) or (+ n).

David

PS FWIW, as a result of the discussion I think there are two consistent 
positions: < takes exactly two arguments, or < takes zero or more 
arguments.  My preference is for the latter.