ActiveSupport、Hash::XML_TYPE_NAMES, Hash::XML_FORMATTING, Hash::XML_PARSING

>> require "rubygems"
=> true
>> require "active_support"
=> true
>> Hash::XML_TYPE_NAMES
=> {"Time"=>"datetime", "Symbol"=>"symbol", "FalseClass"=>"boolean", "Float"=>"float", "BigDecimal"=>"decimal", "Date"=>"date", "DateTime"=>"datetime", "TrueClass"=>"boolean", "Bignum"=>"integer", "Fixnum"=>"integer"}
>> Hash::XML_FORMATTING
=> {"symbol"=>#<Proc:0x40559034@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:60>, "date"=>#<Proc:0x40558ef4@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:61>, "binary"=>#<Proc:0x40558c88@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:63>, "yaml"=>#<Proc:0x40558b70@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:64>, "datetime"=>#<Proc:0x40558ddc@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:62>}
>> Hash::XML_PARSING
=> {"boolean"=>#<Proc:0x405580e4@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:77>, "integer"=>#<Proc:0x405584e0@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:74>, "symbol"=>#<Proc:0x40558918@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:71>, "date"=>#<Proc:0x405587d8@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:72>, "dateTime"=>#<Proc:0x405585f8@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:73>, "base64Binary"=>#<Proc:0x40557cfc@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:80>, "yaml"=>#<Proc:0x40557e50@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:79>, "datetime"=>#<Proc:0x405585f8@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:73>, "double"=>#<Proc:0x405583c8@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:75>, "file"=>#<Proc:0x40557a40@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:81>, "string"=>#<Proc:0x40557fcc@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:78>, "decimal"=>#<Proc:0x4055829c@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:76>, "float"=>#<Proc:0x405583c8@/usr/local/ruby-1.8.6/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/hash/conversions.rb:75>}