[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: XML design of ((a and b) or c)
On 12/13/06, Richard Salz <rsalz@u...> wrote: > > blame stephen bourne (i think he started this). > > > > The famous sh script: programA && programB etc where programB is only > > run if programA returns true. > > Nope, it was a C thing. (The Bourne shell implemented the sort-circuit > operators, but itself was implemented in Algol-like C; > http://minnie.tuhs.org/UnixTree/V7/usr/src/cmd/sh/cmd.c.html) > > /r$ Sort-circuit is a life saver in a world with the dreaded division by zero error/exception Also, prolog has que simbol ! that stop the recursive search. If prolog is anything like a xml rules engine, having sort circuit rules, and maybe symbols, made sense.
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