datafield.rb in marc-0.1.5

- old
+ new

@@ -4,10 +4,20 @@
 module MARC
 
   # MARC records contain data fields, each of which has a tag, 
   # indicators and subfields. Tags for data fields must be in
   # the range 010-999.
+  # Accessor attributes: tag ; indicator1 ; indicator2
+  # 
+  # DataField includes enumerable for access to it's constituent
+  # Subfield objects. For instance, if you have a DataField representing
+  # a 856 tag, and want to find all 'z' subfields:
+  # urltag.find_all { |subfield| subfield.code == 'z' }
+  #
+  # Also, the accessor 'subfields' is an array of MARC::Subfield objects
+  # which can be accessed or modified by the client directly if
+  # neccesary. 
 
   class DataField
     include Enumerable
 
     # The tag for the field
@@ -83,10 +93,10 @@
       return str
     end
 
 
     # Add a subfield (MARC::Subfield) to the field
-    #    field.append(MARC::Subfield('a','Dave Thomas'))
+    #    field.append(MARC::Subfield.new('a','Dave Thomas'))
 
     def append(subfield)
       @subfields.push(subfield)
     end
 