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On Tuesday, April 22, 2003, at 01:22 AM, Michael Burschik wrote:
To quote from the reference implementation: ;; Convenient abbreviations for common unzipping. (define (vector-unzip1 vec) (check-arg vector? vec 'vector-unzip1) (vector-unzip vec 0)) (define (vector-unzip2 vec) (check-arg vector? vec 'vector-unzip2) (vector-unzip vec 1)) (define (vector-unzip3 vec) (check-arg vector? vec 'vector-unzip3) (vector-unzip vec 2)) (define (vector-unzip4 vec) (check-arg vector? vec 'vector-unzip4) (vector-unzip vec 3)) (define (vector-unzip5 vec) (check-arg vector? vec 'vector-unzip5) (vector-unzip vec 5))This would seem to corroborate my assumption that (vector-unzipn vec) ==(vector-unzip vec (- n 1)). But even if I am mistaken, my main point was the definition of vector-unzip5, which breaks the pattern.
To be more accurate, VECTOR-UNZIP[1-4] were wrong, while VECTOR-UNZIP5 was written correctly. I'll get a new copy of the reference implementation and the
SRFI document up soon, fixing this all.
Regards Michael Burschik