This method is deprecated or moved on the latest stable version. The last existing version (v2_2_9) is shown here.
boolean(str)
Converts a String to true or false
Raises an exception if str is not 0 or 1
# File lib/xmlrpc/parser.rb, line 83 def self.boolean(str) case str when "0" then false when "1" then true else raise "RPC-value of type boolean is wrong" end end