obj.examples.todo: Use the 'obj' system as a todo list

extra/obj/examples/todo/todo.factor

@@ -0,0 +1,83 @@
+
+USING: kernel sequences sets combinators.cleave
+       obj obj.view obj.util obj.print ;
+
+IN: obj.examples.todo
+
+SYM: person types adjoin
+SYM: todo   types adjoin
+
+SYM: owners properties adjoin
+SYM: eta    properties adjoin
+SYM: notes  properties adjoin
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+SYM: slava { type person } define-object
+SYM: doug  { type person } define-object
+SYM: ed    { type person } define-object
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+SYM: compiler-bugs
+  {
+    type todo
+    owners { slava }
+    notes  {
+             "Investitage FEP on Terrorist"
+             "Problem with cutler in VirtualBox?"
+           }
+  }
+define-object
+
+SYM: remove-old-accessors-from-core
+  {
+    type todo
+    owners { slava }
+  }
+define-object
+
+SYM: move-db-and-web-framework-to-basis
+  {
+   type todo
+   owners { slava }
+  }
+define-object
+
+SYM: remove-old-accessors-from-basis
+  {
+    type todo
+    owners { doug ed }
+  }
+define-object
+
+SYM: blas-on-bsd
+  {
+    type todo
+    owners { slava doug }
+  }
+define-object
+
+SYM: multi-methods-backend
+  {
+    type todo
+    owners { slava }
+  }
+define-object
+
+SYM: update-core-for-multi-methods { type todo owners { slava } } define-object
+SYM: update-basis-for-multi-methods { type todo } define-object
+SYM: update-extra-for-multi-methods { type todo } define-object
+
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: todo-list ( -- )
+  objects [ type -> todo = ] filter
+    [ { [ self -> ] [ owners -> ] [ eta -> ] } 1arr ]
+  map
+  { "ITEM" "OWNERS" "ETA" } prefix
+  print-table ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+