finished ch7

.obsidian/workspace.json

@@ -34,9 +34,23 @@
               "icon": "lucide-file",
               "title": "Modules and Use"
             }
+          },
+          {
+            "id": "b6a35c226bb40634",
+            "type": "leaf",
+            "state": {
+              "type": "markdown",
+              "state": {
+                "file": "Collection of Common Data Structs.md",
+                "mode": "source",
+                "source": false
+              },
+              "icon": "lucide-file",
+              "title": "Collection of Common Data Structs"
+            }
           }
         ],
-        "currentTab": 1
+        "currentTab": 2
       }
     ],
     "direction": "vertical"
@@ -178,15 +192,16 @@
       "command-palette:Open command palette": false
     }
   },
-  "active": "b80f5219fa24358f",
+  "active": "b6a35c226bb40634",
   "lastOpenFiles": [
+    "Modules and Use.md",
+    "Collection of Common Data Structs.md",
     "Packages.md",
+    "data_types.md",
     "Crates.md",
     "Project Organization.md",
     "crates.io.md",
-    "Modules and Use.md",
     "Paths.md",
-    "data_types.md",
     "does_not_compile.svg",
     "Structures.md",
     "Primitives.md",