I don't think that the meaning really depends on the position. My understanding
is that the
complete value (e.g. "80||" ) is parsed by splitting it into separate strings
at each pipe symbol.
Result: three strings: "80" , "",""
The value "|80|" also gives three strings: "","80",""
Another point is that an empty value means "use the default", which can
only make sense in special cases like this.
Gerd
________________________________
Von: Colin Smale <colin.sm...@xs4all.nl>
Gesendet: Mittwoch, 20. Januar 2016 08:23
An: Tag discussion, strategy and related tools
Betreff: Re: [Tagging] Removing name_1 and alt_name_1 from Wiki
I meant that there is a value missing "between the pipes", which at a slightly
higher semantic level can mean "use the default". A definition which varies
according to position doesn't feel well-formed to me.
//colin
On 2016-01-20 08:10, Gerd Petermann wrote:
Colin Smale wrote
The "lanes" tag family uses a different delimiter ("|"), sometimes
together with a semicolon to make a kind of 2-d array. A double pipe
("||") indicates a missing value there. Wouldn't it be nice if we were
consistent?
That is new to me. My understanding of a double pipe is that described here:
http://wiki.openstreetmap.org/wiki/Proposed_features/lanes_General_Extension#Default_values
Proposed features/lanes General Extension - OpenStreetMap
Wiki<http://wiki.openstreetmap.org/wiki/Proposed_features/lanes_General_Extension#Default_values>
wiki.openstreetmap.org
A simple, straightforward extension of existing tags to specify properties not
only for a way as whole but for the lanes of the way instead. Based on this
general ...
which indicates that a double pipe means one or two default values,
depending on the position.
At the end of the value, it means two default values.
Gerd
--
View this message in context:
http://gis.19327.n5.nabble.com/Removing-name-1-and-alt-name-1-from-Wiki-tp5864465p5865207.html
Sent from the Tagging mailing list archive at Nabble.com.
_______________________________________________
Tagging mailing list
Tagging@openstreetmap.org<mailto:Tagging@openstreetmap.org>
https://lists.openstreetmap.org/listinfo/tagging
_______________________________________________
Tagging mailing list
Tagging@openstreetmap.org
https://lists.openstreetmap.org/listinfo/tagging
