lib/open_classes/array.rb in tbpgr_utils-0.0.6 vs lib/open_classes/array.rb in tbpgr_utils-0.0.7

@@ -1,17 +1,23 @@
-# encoding: utf-8
-
-# =Array
-class Array
-  # ==Arrays loop together
-  def together
-    each { |f|fail TypeError, "you have to use [Array1, Array2, ...] | #{f.class} is invalid" unless f.class == Array }
-    first.each_with_index do |i_v, i|
-      eval_each = []
-      each_with_index do |j_v, j|
-        eval_each << "self[#{j}][#{i}]"
-      end
-      eval_each_str = eval_each.join(',')
-      instance_eval "yield(#{eval_each_str})"
-    end
-  end
-end
+# encoding: utf-8
+
+# Array
+class Array
+  # Arrays loop together
+  #
+  #   alpha = %w{one two three}
+  #   numbers = %w{1 2 3}
+  #   [alpha, numbers].together do |first, second|
+  #     print "#{first}:#{second}\n"  # => output one:1, two:2, three:3
+  #   end
+  def together
+    each { |f|fail TypeError, "you have to use [Array1, Array2, ...] | #{f.class} is invalid" unless f.class == Array }
+    first.each_with_index do |i_v, i|
+      eval_each = []
+      each_with_index do |j_v, j|
+        eval_each << "self[#{j}][#{i}]"
+      end
+      eval_each_str = eval_each.join(',')
+      instance_eval "yield(#{eval_each_str})"
+    end
+  end
+end