On Thu, Jul 13, 2000 at 03:17:41PM -0400, Greg Wilson wrote: > I gave 20+ grad students in computer engineering and computer science > (plus a couple of profs) the questionnaire below. A summary of > results is: > * Versions (D), (F), and (H) show that semi-colon separated targets > imply cross-product iteration, but 'and' and 'while' imply > simultaneous iteration. Really ? Looking at it, it looks like 'while' also implies cross-product: > (H) > for x in [10, 20, 30] while y in [1, 2, 3]: 2 7 0 0 1 1 > print x+y > > (I) > for x in [10, 20, 30] while y in [1, 2]: 0 1 0 7 2 1 > print x+y 'and' does seem to be the 'right' thing, but mostly in the awkward extra-grouped variant... Apparently using a builtin instead of a syntax change is a good thing. Hopefully it will at least get people thinking, instead of assuming. -- Thomas Wouters <thomas@xs4all.net> Hi! I'm a .signature virus! copy me into your .signature file to help me spread!
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