# File lib/rspec/matchers/built_in/start_and_end_with.rb, line 9 def matches?(actual) @actual = actual.respond_to?(:[]) ? actual : (raise ArgumentError.new("#{actual.inspect} does not respond to :[]")) begin @expected.respond_to?(:length) ? subset_matches?(@expected, @actual) : element_matches?(@expected, @actual) rescue ArgumentError raise ArgumentError.new("#{actual.inspect} does not have ordered elements") end end