lib/eco/data/mapper.rb in eco-helpers-0.6.6 vs lib/eco/data/mapper.rb in eco-helpers-0.6.7

@@ -5,10 +5,11 @@
       # it expects [[v1a, v1b], [v2a, v2b] ...]
       def initialize (array_of_arrays = [], internal: :last)
         @source = array_of_arrays
 
         if @source
+          # internal should be always last in @source
           @source = @source.map { |a| a.reverse } unless internal == :last
 
           # first declarations take priority
           @by_external = @source.reverse.to_h
           @by_internal = @source.reverse.map do |pair|
@@ -18,10 +19,10 @@
       end
 
       def list(type = :internal)
         return [] if !@source
         @source.map do |pair|
-          type == :internal ? pair.first : pair.last
+          type == :internal ? pair.last : pair.first
         end.uniq
       end
 
       def internal?(value)
         return true if !@source