On Wed, Sep 21, 2011 at 14:31, Casey McCann
My thoughts are that the first interpretation is most naturally suited to list range syntax, that the second would be better served by a slightly different syntax to make the predicate more explicit, and that the third bugs the crap out of me because it's really very useful but I can't think of a concise and unambiguous syntax for it.
Based on what you said, I'm wondering if the first gets basic fromTo syntax, the third gets fromThenTo syntax, and the second strikes me as a simplified form of list comprehension and might possibly be phrased as a cross between range and comprehension. Although the most "correct" such cross has an ambiguity with the comma... can we still use | as the delimiter, read as "such that"? ([a .. z | filter]) -- brandon s allbery allbery.b@gmail.com wandering unix systems administrator (available) (412) 475-9364 vm/sms