lib/plurimath/math/function/frac.rb in plurimath-0.2.0 vs lib/plurimath/math/function/frac.rb in plurimath-0.2.1

@@ -5,17 +5,17 @@
 module Plurimath
   module Math
     module Function
       class Frac < BinaryFunction
         def to_mathml_without_math_tag
-          first_value = parameter_one.to_mathml_without_math_tag if parameter_one
-          two_value = parameter_two.to_mathml_without_math_tag if parameter_two
+          first_value = parameter_one&.to_mathml_without_math_tag
+          two_value = parameter_two&.to_mathml_without_math_tag
           "<mfrac>#{first_value}#{two_value}</mfrac>"
         end
 
         def to_latex
-          first_value = parameter_one.to_latex if parameter_one
-          two_value = parameter_two.to_latex if parameter_two
+          first_value = parameter_one&.to_latex
+          two_value = parameter_two&.to_latex
           "\\frac{#{first_value}}{#{two_value}}"
         end
       end
     end
   end