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class Module
##
# call-seq:
# mod < other -> true, false, or nil
#
# Returns true if <i>mod</i> is a subclass of <i>other</i>. Returns
# <code>nil</code> if there's no relationship between the two.
# (Think of the relationship in terms of the class definition:
# "class A < B" implies "A < B".)
#
def <(other)
raise TypeError, 'compared with non class/module' unless other.is_a?(Module)
if self.equal?(other)
false
else
self <= other
end
end
##
# call-seq:
# mod <= other -> true, false, or nil
#
# Returns true if <i>mod</i> is a subclass of <i>other</i> or
# is the same as <i>other</i>. Returns
# <code>nil</code> if there's no relationship between the two.
# (Think of the relationship in terms of the class definition:
# "class A < B" implies "A < B".)
def <=(other)
raise TypeError, 'compared with non class/module' unless other.is_a?(Module)
if self.ancestors.include?(other)
return true
elsif other.ancestors.include?(self)
return false
end
end
end
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