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Re: [ddlm-group] A modest addition to the DDLm spec. .
- To: Nick.Spadaccini@uwa.edu.au, 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 22:54:04 -0400 (EDT)
- In-Reply-To: <C8CB5070.14141%nick@csse.uwa.edu.au>
- References: <C8CB5070.14141%nick@csse.uwa.edu.au>
Dear Nic, If the spec is quoted string literal + quoted string litera;, +4 is no problem, it is just +4. "breaking the underlying structure of a > tag-value construct in the original STAR/CIF" is no more done by this extension than it was by the bracketed constructs. Could we stick to the practical reality of: 1. Is this useful to a reasonable number of people? and 2. Does it break anything? I believe the answers are yes and no. Do you have any specific evidence to the contrary? Regards, Herbert ===================================================== 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 Fri, 1 Oct 2010, Nick Spadaccini wrote: > And there in lies the first incompatibility. > > _atom_site.charge +4 > > Is not allowed. But -4 is. > > In all honesty I can't see how breaking the underlying structure of a > tag-value construct in the original STAR/CIF in this way actually improves > any backwards compatibility to CIF1 - which I must admit I don't see as such > a high priority to warrant these machinations. > > With my usual disclaimer that these are comments only and IUCr and your > group need to work out what you want CIF to be. > > > On 1/10/10 1:16 AM, "Herbert J. Bernstein" <yaya@bernstein-plus-sons.com> > wrote: > >> 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 > > cheers > > Nick > > -------------------------------- > Associate Professor N. Spadaccini, PhD > School of Computer Science & Software Engineering > > The University of Western Australia t: +61 (0)8 6488 3452 > 35 Stirling Highway f: +61 (0)8 6488 1089 > CRAWLEY, Perth, WA 6009 AUSTRALIA w3: www.csse.uwa.edu.au/~nick > MBDP M002 > > CRICOS Provider Code: 00126G > > e: Nick.Spadaccini@uwa.edu.au > > > > > _______________________________________________ > 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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