<=

 More than one method matched your request. You can refine
 your search by asking for information on one of:
 
      Module#<=, Module#<=>, Time#<=>, Array#<=>, Pathname#<=>,
      Complex#<=>, Bignum#<=>, Float#<=, Float#<=>, File::Stat#<=>,
      Fixnum#<=, Fixnum#<=>, Comparable#<=, Numeric#<=>, Rational#<=>,
      String#<=>, Date#<=>

 Array#<=> Comparable#<= Complex#<=> File::Stat#<=> Float#<=
 Float#<=> Integer#<= Integer#<=> Module#<= Module#<=>
 Rational#<=> String#<= String#<=> Time#<=>

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