update Iterator and Common Patterns

Author: rambasnet

notebooks/CommonDesignPatterns.ipynb

@@ -248,7 +248,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": 26,
    "id": "52b6f924",
    "metadata": {},
    "outputs": [],
@@ -263,7 +263,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": 27,
    "id": "a2055780",
    "metadata": {},
    "outputs": [
@@ -273,7 +273,7 @@
        "'6-card deals: 20,358,520'"
       ]
      },
-     "execution_count": 13,
+     "execution_count": 27,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -284,7 +284,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 28,
    "id": "0915bccf",
    "metadata": {},
    "outputs": [],
@@ -299,7 +299,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 29,
    "id": "7a113558",
    "metadata": {},
    "outputs": [
@@ -309,7 +309,7 @@
        "'6-card deals: 20,358,520'"
       ]
      },
-     "execution_count": 15,
+     "execution_count": 29,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -320,14 +320,95 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 16,
+   "execution_count": 31,
+   "id": "0f452305",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "CacheInfo(hits=0, misses=1, maxsize=64, currsize=1)"
+      ]
+     },
+     "execution_count": 31,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "binom.cache_info()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 32,
+   "id": "c6c71dd3",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# let's look into memoized fib function\n",
+    "@lru_cache(maxsize=None)\n",
+    "def fib(n):\n",
+    "    if n < 2:\n",
+    "        return n\n",
+    "    return fib(n-1) + fib(n-2)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 33,
+   "id": "a700c86a",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610]"
+      ]
+     },
+     "execution_count": 33,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "[fib(n) for n in range(16)]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 34,
+   "id": "7d5897e4",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "CacheInfo(hits=28, misses=16, maxsize=None, currsize=16)"
+      ]
+     },
+     "execution_count": 34,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "fib.cache_info()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 35,
    "id": "5d5badb2",
    "metadata": {},
    "outputs": [],
    "source": [
     "# class decorators\n",
-    "# run the named_logger.py file to see the log being generated\n",
-    "# demo.log is not generated from the Jupyter Notebook\n",
+    "# Generates demo.log when applied to a function\n",
+    "# __call__ overrides when the class is called like a function\n",
+    "\n",
+    "from functools import wraps\n",
+    "from typing import Callable, Any\n",
     "import logging\n",
     "import time\n",
     "\n",
@@ -364,7 +445,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 17,
+   "execution_count": 36,
    "id": "1a4223d8",
    "metadata": {},
    "outputs": [],
@@ -376,7 +457,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 18,
+   "execution_count": 37,
    "id": "2c7eb728",
    "metadata": {},
    "outputs": [
@@ -386,7 +467,7 @@
        "6"
       ]
      },
-     "execution_count": 18,
+     "execution_count": 37,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -397,15 +478,16 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 19,
+   "execution_count": 38,
    "id": "5757b477",
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "2024-04-09 16:28:18,423 test4, 2.0μs\n"
+      "2024-11-14 09:10:02,286 test4, 0.9μs\r\n",
+      "2024-11-14 10:36:01,177 test4, 0.9μs\r\n"
      ]
     }
    ],
@@ -458,7 +540,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 20,
+   "execution_count": 13,
    "id": "b0845c87",
    "metadata": {},
    "outputs": [],
@@ -504,7 +586,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 21,
+   "execution_count": 15,
    "id": "60c907d5",
    "metadata": {},
    "outputs": [],
@@ -515,7 +597,7 @@
     "    \"\"\" Updates the Hexviewer. \"\"\"\n",
     "    \n",
     "    def update(self, subject):\n",
-    "        print('HexViewer: Subject {} has data 0x{:x}'.format(subject.name, subject.data))\n",
+    "        print(f'HexViewer: Subject {subject.name} has data 0x{subject.data:x}')\n",
     " \n",
     "\n",
     "class OctalViewer:\n",
@@ -534,7 +616,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 22,
+   "execution_count": 16,
    "id": "970c60ec",
    "metadata": {},
    "outputs": [],
@@ -544,7 +626,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 23,
+   "execution_count": 17,
    "id": "cf9b10df",
    "metadata": {},
    "outputs": [],
@@ -556,7 +638,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 24,
+   "execution_count": 18,
    "id": "600cabe8",
    "metadata": {},
    "outputs": [],
@@ -568,7 +650,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 25,
+   "execution_count": 19,
    "id": "9dac70cf",
    "metadata": {},
    "outputs": [
@@ -747,7 +829,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 20,
    "id": "e7dccd47",
    "metadata": {},
    "outputs": [],
@@ -860,7 +942,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 21,
    "id": "eb74083e",
    "metadata": {},
    "outputs": [],
@@ -875,7 +957,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 22,
    "id": "84f930e9",
    "metadata": {},
    "outputs": [],
@@ -887,10 +969,24 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 23,
    "id": "e07cf19c",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Invoker: Does anybody want something done before I begin?\n",
+      "SimpleCommand: See, I can do simple things like printing(Say Hi!)\n",
+      "Invoker: ...doing something really important...\n",
+      "Invoker: Does anybody want something done after I finish?\n",
+      "ComplexCommand: Complex stuff should be done by a receiver object\n",
+      "Receiver: Working on (Send email.)\n",
+      "Receiver: Also working on (Save report.)"
+     ]
+    }
+   ],
    "source": [
     "invoker.do_something_important()"
    ]
@@ -1538,7 +1634,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.12.2"
+   "version": "3.10.8"
   }
  },
  "nbformat": 4,