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# File 'lib/algebra/sets-system.rb', line 2
def use_setname
const = 'C__names__'
evalstr = " class \#{name}\n raise '\#{const} is already defined.' if defined? \#{const}\n \n \#{const} = {}\n \n raise 'setname is already defined.' if defined? setname\n\n def setname(s)\n \#{const}[self] = s\n end\n \n alias inspect! inspect\n \n def inspect\n \#{const}[self] || super\n end\n \n end\n __END_OF_EVAL__\n eval(evalstr, TOPLEVEL_BINDING)\nend\n"
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