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peterhellberg/transform_hash.rb

Created October 19, 2012 15:08
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Hash Autovivification and eval trickery
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transform_hash.rb
data = {
"section1.stuff"=>"as",
"section1.stuff2" => "qw",
"section2.stuff3" => "zx"
}
hash = Hash.new(&(p=lambda{|h,k|h[k]=Hash.new(&p)}))
data.each_with_object(hash) { |(k,v), h|
eval "h['#{k.gsub('.',"']['")}']='#{v}'"
}
hash.inspect # => "{\"section1\"=>{\"stuff\"=>\"as\", \"stuff2\"=>\"qw\"}, \"section2\"=>{\"stuff3\"=>\"zx\"}}"
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