[Tagging] Wiki Edit War on using/avoiding semicolon lists

[Никита]

You don't know regexes and theory behind them. I don't care about your
one-line perl hacks.
You will never teach your ugly hacks to to OSM users. You are insane to
write these things as argument for using ";".
You will always fail when I add more data to database. There always pattern
that will broke your regex. But you are guy with rope.


I just an idiot who knows that literal sting "payment:efectivo"="yes"
requires no
computational power other than index search.
There no regex to write for "payment:efectivo"="yes" at all. JOSM and
overpass will understand this query right now, without any modification.



> You have to be aware of values like "1", "true", "unknown" etc.
SO WHAT? How this is relevant to ''';" usage in value at all? Have you ever
seen numbers in database? Do you too busy with your regexes? What are you
talking about?

http://taginfo.openstreetmap.org/keys/payment%3Acoins#values
http://taginfo.openstreetmap.org/tags/payment%3Acoins=yes - 26 37395.32%
http://taginfo.openstreetmap.org/tags/payment%3Acoins=no 1 142 4.13%

2015-01-21 6:13 GMT+03:00 Friedrich Volkmann <bsd at volki.at>:

> On 21.01.2015 02:51, Никита wrote:
> > payment=efectivo;visa;mastercard;american␣express
> > payment=mastercard;visa;efectivo
> >
> > Now try to find *efectivo *with your regexes.
>
> With a perl regex:
> ^[^=]+=(.*;)?\s*efectivo\s*(;.*)?$
>
> Usually you only have the value in your variable, so you only need:
> ^(.*;)?\s*efectivo\s*(;.*)?$
>
> But it's better programming style to split the values into arrays before
> you
> work with them, like (in perl):
> $_->{single_vals} = split /;/, $_->{compound_val} for keys @tags;
>
> Then you need no regexp at all for your comparisons.
>
> > How to query for "payment:efectivo"="yes"? I definitely need regex here.
>
> You have to be aware of values like "1", "true", "unknown" etc.
>
> --
> Friedrich K. Volkmann       http://www.volki.at/
> Adr.: Davidgasse 76-80/14/10, 1100 Wien, Austria
>
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