1 files changed, 20 insertions, 0 deletions
diff --git a/lib/roo/helpers/default_attr_reader.rb b/lib/roo/helpers/default_attr_reader.rb
new file mode 100644
index 0000000..a02ba84
--- /dev/null
+++ b/lib/roo/helpers/default_attr_reader.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Roo
+  module Helpers
+    module DefaultAttrReader
+      def attr_reader_with_default(attr_hash)
+        attr_hash.each do |attr_name, default_value|
+          instance_variable = :"@#{attr_name}"
+          define_method attr_name do
+            if instance_variable_defined? instance_variable
+              instance_variable_get instance_variable
+            else
+              default_value
+            end
+          end
+        end
+      end
+    end
+  end
+end