Discussion List Archives

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [ddlm-group] A modest addition to the DDLm spec. .

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

Reply to: [list | sender only]
International Union of Crystallography

Scientific Union Member of the International Council for Science (admitted 1947). Member of CODATA, the ICSU Committee on Data. Member of ICSTI, the International Council for Scientific and Technical Information. Partner with UNESCO, the United Nations Educational, Scientific and Cultural Organization in the International Year of Crystallography 2014.

ICSU Scientific Freedom Policy

The IUCr observes the basic policy of non-discrimination and affirms the right and freedom of scientists to associate in international scientific activity without regard to such factors as ethnic origin, religion, citizenship, language, political stance, gender, sex or age, in accordance with the Statutes of the International Council for Science.