Re: [apps-discuss] Question about URI template and expansion of an empty list
Joe Gregorio <joe@bitworking.org> Wed, 17 April 2013 14:03 UTC
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Date: Wed, 17 Apr 2013 10:03:19 -0400
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From: Joe Gregorio <joe@bitworking.org>
To: Erik Wilde <dret@berkeley.edu>
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Subject: Re: [apps-discuss] Question about URI template and expansion of an empty list
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Sorry for the delay in responding. On Mon, Apr 8, 2013 at 1:41 AM, Erik Wilde <dret@berkeley.edu> wrote: > hello francis. > > > On 2013-04-07 13:38 , Francis Galiegue wrote: >> >> On Fri, Apr 5, 2013 at 8:39 PM, Francis Galiegue <fgaliegue@gmail.com> >> wrote: >>> >>> Let us say that there is a variable called "list", whose value is an >>> empty list: >>> list = [] >>> Now let us have this template: >>> X{.list} >>> Should the expansion be "X" or "X."? And, more importantly, why? >> >> Any insights? I have read the spec by and large (RFC 6570) and still >> cannot figure it out... > > > https://github.com/dret/uritemplate-test/blob/master/spec-examples-by-section.json > (line 234) says it's "X", but i am really interested in the "why" > explanation as well. http://tools.ietf.org/html/rfc6570#section-3.2.5 says > that The answer is in the text you quote: "for each defined variable in the variable-list, append '.' to the result string and then perform variable expansion" The set of variables in the variable list is the empty set, so no '.' is appended. I agree that if this is confusing an addendum is in order. -joe >, and i cannot find any > text saying that an empty list is considered to be undefined. i have read > the spec recently and never looked at this particular case, but without > looking at the test cases i would have said it has to be expanded to "X." > and not "X". > > cheers, > > dret. > > -- > erik wilde | mailto:dret@berkeley.edu - tel:+1-510-2061079 | > | UC Berkeley - School of Information (ISchool) | > | http://dret.net/netdret http://twitter.com/dret | > > _______________________________________________ > apps-discuss mailing list > apps-discuss@ietf.org > https://www.ietf.org/mailman/listinfo/apps-discuss -- Joe Gregorio http://bitworking.org
- [apps-discuss] Question about URI template and ex… Francis Galiegue
- Re: [apps-discuss] Question about URI template an… Francis Galiegue
- Re: [apps-discuss] Question about URI template an… Erik Wilde
- Re: [apps-discuss] Question about URI template an… Murray S. Kucherawy
- Re: [apps-discuss] Question about URI template an… Francis Galiegue
- Re: [apps-discuss] Question about URI template an… James M Snell
- Re: [apps-discuss] Question about URI template an… Murray S. Kucherawy
- Re: [apps-discuss] Question about URI template an… James M Snell
- Re: [apps-discuss] Question about URI template an… Erik Wilde
- Re: [apps-discuss] Question about URI template an… Francis Galiegue
- Re: [apps-discuss] Question about URI template an… James M Snell
- Re: [apps-discuss] Question about URI template an… Erik Wilde
- Re: [apps-discuss] Question about URI template an… Murray S. Kucherawy
- Re: [apps-discuss] Question about URI template an… Francis Galiegue
- Re: [apps-discuss] Question about URI template an… Francis Galiegue
- Re: [apps-discuss] Question about URI template an… Francis Galiegue
- Re: [apps-discuss] Question about URI template an… Erik Wilde
- Re: [apps-discuss] Question about URI template an… Murray S. Kucherawy
- Re: [apps-discuss] Question about URI template an… James M Snell
- Re: [apps-discuss] Question about URI template an… Joe Gregorio
- Re: [apps-discuss] Question about URI template an… Francis Galiegue
- Re: [apps-discuss] Question about URI template an… Joe Gregorio
- Re: [apps-discuss] Question about URI template an… Erik Wilde
- Re: [apps-discuss] Question about URI template an… James M Snell