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Re: [ddlm-group] A modest addition to the DDLm spec. .
- To: Group finalising DDLm and associated dictionaries <ddlm-group@iucr.org>
- Subject: Re: [ddlm-group] A modest addition to the DDLm spec. .
- From: "Herbert J. Bernstein" <yaya@bernstein-plus-sons.com>
- Date: Thu, 30 Sep 2010 13:16:50 -0400 (EDT)
- In-Reply-To: <8F77913624F7524AACD2A92EAF3BFA5416659DEDF4@SJMEMXMBS11.stjude.sjcrh.local>
- References: <4C471374.6000100@mcmaster.ca><alpine.BSF.2.00.1007211307460.37813@epsilon.pair.com><AANLkTinyxmyKFOt=A6Cpdq=8LVsSR4+Js9xDOG+JEF--@mail.gmail.com><AANLkTimTab=b9u6nsUjd6UitRni-OgMTJNZYt1EMjrhE@mail.gmail.com><a06240804c8ca43f92cc2@[192.168.2.104]><295878.84365.qm@web87008.mail.ird.yahoo.com><8F77913624F7524AACD2A92EAF3BFA5416659DEDF4@SJMEMXMBS11.stjude.sjcrh.local>
You must, of course, quote all pluses not being used as a concatenation operator. ===================================================== Herbert J. Bernstein, Professor of Computer Science Dowling College, Kramer Science Center, KSC 121 Idle Hour Blvd, Oakdale, NY, 11769 +1-631-244-3035 yaya@dowling.edu ===================================================== On Thu, 30 Sep 2010, Bollinger, John C wrote: > On Thursday, September 30, 2010 10:18 AM, SIMON WESTRIP wrote: > >> First thought is how does this work in loops? >> >> loop_ _item >> 'abc' + 'def' > > One specific (but synthetic) example I was thinking of was along the same lines: > > loop_ > _amino_acid.code > _amino_acid.optical_rotation_direction > 'ALA' + > 'ARG' + > 'LEU' - > >> But I need to check whether + is one of the characters that is not allowed to start a >> non-delimited string... > > It is not. Those are " ' _ $ [ { > If the proposal is adopted then adding + to that list would reduce the added complications for parsing. That would be incompatible with using the optional leading + with numeric values, however. > >> Otherwise I see no reason not to explore this. > > I see no reason at all not to explore it. Notwithstanding the above, I have not yet formed an opinion on this question. > > > Regards, > > John > -- > John C. Bollinger, Ph.D. > Department of Structural Biology > St. Jude Children's Research Hospital > > > Email Disclaimer: www.stjude.org/emaildisclaimer > _______________________________________________ > ddlm-group mailing list > ddlm-group@iucr.org > http://scripts.iucr.org/mailman/listinfo/ddlm-group > _______________________________________________ ddlm-group mailing list ddlm-group@iucr.org http://scripts.iucr.org/mailman/listinfo/ddlm-group
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