lib/regexp-examples/helpers.rb in regexp-examples-0.3.1 vs lib/regexp-examples/helpers.rb in regexp-examples-0.3.2

@@ -3,24 +3,32 @@
   # returns all possible perutations,
   # for strings created by joining one
   # element from each array
   #
   # For example:
-  # permutations_of_strings [ ['a'], ['b'], ['c', 'd', 'e'] ] #=> ['acb', 'abd', 'abe']
+  # permutations_of_strings [ ['a'], ['b'], ['c', 'd', 'e'] ] #=> ['abc', 'abd', 'abe']
   # permutations_of_strings [ ['a', 'b'], ['c', 'd'] ] #=> [ 'ac', 'ad', 'bc', 'bd' ]
-  def self.permutations_of_strings(arrays_of_strings, options={})
+  def self.permutations_of_strings(arrays_of_strings)
     first = arrays_of_strings.shift
     return first if arrays_of_strings.empty?
-    first.product( permutations_of_strings(arrays_of_strings, options) ).map do |result|
+    first.product( permutations_of_strings(arrays_of_strings) ).map do |result|
       join_preserving_capture_groups(result)
     end
   end
 
   def self.join_preserving_capture_groups(result)
     result.flatten!
     subgroups = result
       .map(&:all_subgroups)
       .flatten
     GroupResult.new(result.join, nil, subgroups)
+  end
+
+  def self.map_results(repeaters)
+    repeaters
+      .map {|repeater| repeater.result}
+      .instance_eval do |partial_results|
+        RegexpExamples::permutations_of_strings(partial_results)
+      end
   end
 end