From: Frank Church <vfcforums@...>
Date: 2007-06-26T20:21:20+09:00
Subject: I need some help clarifying issues with YAML and hashes


The code below, config.yml and testvars.rb are supposed to created some
arrays and hashes.

When I assign the directory1 and directory2 hashes directly into
dirArray :

dirname.each  { | k |  dirArray = k }

dirArray doesn't contains the keys "directory1" and "directory2", which
is what I expect

but when I assign them via key = value

dirname.each  { | k |  k.each {| l, m |  dirArray[l]=m } }

dirArray contains the keys "directory1" and "directory2"

I know my grasp of ruby semantics is not up to scratch yet, but is it a
YAML issue or a Ruby issue?



config4.yml
=============

directories      :
    directory1   :
       directory : /thisdirectory/yada/yada/yada
       archivename : archivename01
       configdir : configdir01
       workdir   : workingdir01
       logsdir : logsdir01

    directory2   :
       directory : /thisdirectory/yada2/yada2/yada2
       archivename : archivename02
       configdir : configdir02
       workdir   : workingdir02
       logsdir : logsdir02



Code - testvars4.rb
=============

require 'yaml'

config = YAML::load(File.open('config4.yml'))

puts "assign via hash directly\n"
puts ""

dirArray = Hash.new
config["directories"].each  { | dirname |
puts ""

dirname.each  { | k |  dirArray = k }

puts "dirArray elements start = \n"
puts ""
dirArray.each { | l, m | puts "#{l} => #{m}" }
puts ""
puts "dirArray elements end= \n"

}
puts ""
puts "assign via | key = val | \n"
puts

dirArray = Hash.new
config["directories"].each  { | dirname |

dirname.each  { | k |  k.each {| l, m |  dirArray[l]=m } }

puts "dirArray elements start = \n"
puts ""
dirArray.each { | l, m | puts "#{l} => #{m}" }
puts ""
puts "dirArray elements end= \n"
puts ""
}


Output
==========

assign via hash directly


dirArray elements start =

directory => /thisdirectory/yada/yada/yada
configdir => configdir01
workdir => workingdir01
archivename => archivename01
logsdir => logsdir01

dirArray elements end=

dirArray elements start =

directory => /thisdirectory/yada2/yada2/yada2
configdir => configdir02
workdir => workingdir02
archivename => archivename02
logsdir => logsdir02

dirArray elements end=


assign via | key = val |

dirArray elements start =

directory => /thisdirectory/yada/yada/yada
configdir => configdir01
archivename => archivename01
workdir => workingdir01
logsdir => logsdir01
directory1 =>

dirArray elements end=

dirArray elements start =

directory => /thisdirectory/yada2/yada2/yada2
configdir => configdir02
archivename => archivename02
workdir => workingdir02
logsdir => logsdir02
directory1 =>
directory2 =>

dirArray elements end=

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