lib/aixm/w.rb in aixm-1.0.0 vs lib/aixm/w.rb in aixm-1.1.0

@@ -36,11 +36,11 @@
       %Q(#<#{self.class} #{to_s}>)
     end
 
     # @return [String] human readable representation (e.g. "123 t")
     def to_s
-      [wgt, unit].join(' ')
+      [wgt, unit].join(' '.freeze)
     end
 
     def wgt=(value)
       fail(ArgumentError, "invalid wgt") unless value.is_a?(Numeric) && value >= 0
       @wgt = value.to_f
@@ -54,9 +54,10 @@
 
     # @!method to_kg
     # @!method to_t
     # @!method to_lb
     # @!method to_ton
+    #
     # @return [AIXM::W] convert weight
     UNITS.each_key do |target_unit|
       define_method "to_#{target_unit}" do
         return self if unit == target_unit
         self.class.new((wgt * UNITS[unit][target_unit]).round(8), target_unit)