[r6rs-discuss] [Formal] Simplifying conditions

John Cowan cowan at ccil.org
Sun Nov 26 12:28:57 EST 2006


Michael Sperber scripsit:

> The condition system distinguishes between simple conditions and
> compound conditions.  A compound condition consists of an ordered set
> of simple conditions.  Thus, every condition can be viewed as an
> ordered set of simple component conditions: If it is simple, the set
> consists of the condition itself; if it is compound, it consists of
> the simple conditions that compose it.

This is certainly better than the draft, but I would still prefer
a multiple-inheritance style, whereby a compound condition is the
merger of the fields of the simple conditions which make it up.

-- 
Long-short-short, long-short-short / Dactyls in dimeter,     John Cowan
Verse form with choriambs / (Masculine rhyme):           cowan at ccil.org
One sentence (two stanzas) / Hexasyllabically
Challenges poets who / Don't have the time.     --robison who's at texas dot net



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