Merge pull request #24502 from ankit8898/freezing-dot-in-delimiter-helper

Lesser '.' objects for number helpers

activesupport/lib/active_support/number_helper/number_to_delimited_converter.rb

@@ -12,7 +12,7 @@ def convert
       private
 
         def parts
-          left, right = number.to_s.split('.')
+          left, right = number.to_s.split('.'.freeze)
           left.gsub!(delimiter_pattern) do |digit_to_delimit|
             "#{digit_to_delimit}#{options[:delimiter]}"
           end

activesupport/lib/active_support/number_helper/number_to_rounded_converter.rb

@@ -29,9 +29,11 @@ def convert
 
           formatted_string =
             if BigDecimal === rounded_number && rounded_number.finite?
-              s = rounded_number.to_s('F') + '0'*precision
-              a, b = s.split('.', 2)
-              a + '.' + b[0, precision]
+              s = rounded_number.to_s('F')
+              s << '0'.freeze * precision
+              a, b = s.split('.'.freeze, 2)
+              a << '.'.freeze
+              a << b[0, precision]
             else
               "%00.#{precision}f" % rounded_number
             end