From: 7stud -- <bbxx789_05ss@...>
Date: 2011-05-07T02:33:33+09:00
Subject: Re: newbie to using builder(for xml markup)

Brad Symons wrote in post #997015:
>
> I am just trying to understand how builder sorts the content of an xml
> node, because no matter how I arrange the options, they appears sorted
> differently in the irb.

1) The ordering of an xml element's attributes is irrelevant.

2) There are enough inconsistencies between irb and a real ruby program 
that using irb to troubleshoot code is a waste of time.



>
> ids = ["1","2","3"]
> alphas = ["xxx","yyy","zzz"]
>
> xml = Builder::XmlMarkup.new( :target => $stdout, :indent => 2 )
> xml.instruct! :xml, :version => "1.1", :encoding => "US-ASCII"
>
> ids.each do |num|
>   xml.programme(:alpha => alphas.fetch(ids.index(num)), :id => num)
> end
>
> Also, is there an easy way to map the values of the arrays together,
> than using the fetch method?
>

1)

ids.each_index do |i|
  xml.programme(:alpha => alphas[i], :id => ids[i])
end


2)

ids = ["1","2","3"]
alphas = ["xxx","yyy","zzz"]

h = Hash[*alphas.zip(ids).flatten]

p h

--output:--
{"xxx"=>"1", "yyy"=>"2", "zzz"=>"3"}

-- 
Posted via http://www.ruby-forum.com/.