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Re: [ddlm-group] Space as a list item separator>
- To: Group finalising DDLm and associated dictionaries <[email protected]>
- Subject: Re: [ddlm-group] Space as a list item separator>
- From: "Herbert J. Bernstein" <[email protected]>
- Date: Tue, 1 Dec 2009 06:01:48 -0500 (EST)
- In-Reply-To: <[email protected]>
- References: <C7398588.126B6%[email protected]><[email protected]><[email protected]><[email protected]><[email protected]><[email protected]><[email protected]><[email protected]>
First amending the arguments To summarise the arguments: 1. In favour of both space and comma �� - comma is used in some other non-CIF contexts as a list delimiter - comma allows a large subset of lists and arrays to be carried opaquely in CIF 1 and CIF 1.1 documents. 2. Against comma: �� - A single type of separator makes the grammar simpler �� - Space is used everywhere else in CIF as a separator (consistency) �� - Comma can then be used in non-delimited strings Then I vote for comma and space -- 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 [email protected] ===================================================== On Tue, 1 Dec 2009, James Hester wrote: > Dear CIF2 people: the time has come to vote on the list item separator > issue.� Firstly: as far as I know, nobody is against space as a separator, > so spaces will be possible list item separators.� Some may be against > commas, so this vote is on whether or not to allow commas. > > To summarise the arguments: > > 1. In favour of both space and comma > �� - comma is used in some other non-CIF contexts as a list delimiter > > 2. Against comma: > �� - A single type of separator makes the grammar simpler > �� - Space is used everywhere else in CIF as a separator (consistency) > �� - Comma can then be used in non-delimited strings > > Space only: Nick, James (Nick is here) > Comma and Space: ? > > On Tue, Dec 1, 2009 at 5:30 PM, James Hester <[email protected]> wrote: > More specifically, CIF1.1 excludes square brackets as the first > character in a non-delimited string. > > > On Tue, Dec 1, 2009 at 9:33 AM, James Hester <[email protected]> > wrote: > Dear Herbert: as CIF 1.1 doesn't define lists, I'm not > sure why you suggest that the example below is a valid > tag. > > On Tue, Dec 1, 2009 at 12:36 AM, Herbert J. Bernstein > <[email protected]> wrote: > Sorry something got lost in the prior message. > �It should have > read: > > Dear Colleagues, > > �Back to the question of commas. > �If you accept the desirability of > having a CIF 1.5, commas in lists > become very useful. �Someone with > a CIF 1.1 editor will be able to > prepare a CIF 1.5 file for many > useful cases by doing all lists > with commas and no embedded blanks > as long as they can make their > lists fit on single lines. �In CIF > 1.1 > > [[1,2,3],[4,5,6],[7,8,9]] > > is a valid value for a tag, but > > [[1 2 3] [4 5 6] [7 8 9]] > > is not. > > > No, neither example is a valid CIF 1.1 tag.� CIF 1.1 explicitly > excludes brackets as the first character of a non-delimited > string. > > > Having the option of commas in lists > will help to smooth the > transition for at least some people. > > > > -- > T +61 (02) 9717 9907 > F +61 (02) 9717 3145 > M +61 (04) 0249 4148 > > > > > -- > T +61 (02) 9717 9907 > F +61 (02) 9717 3145 > M +61 (04) 0249 4148 > > > > > -- > T +61 (02) 9717 9907 > F +61 (02) 9717 3145 > M +61 (04) 0249 4148 > >
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