Update Part01/Chapter06

Author: aminkhani

Part1-Functional/06-FirstClassFunctions/FirstClassFunction.ipynb

@@ -13,9 +13,14 @@
    "id": "f2fe6be8",
    "metadata": {},
    "source": [
-    "> [!NOTE]\n",
-    ">\n",
-    "> Suggest download it first and then use it"
+    "> 📍 Suggest download it first and then use it 📍"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### List Comprehension Alternative To `map`"
    ]
   },
   {
@@ -3359,6 +3364,128 @@
     "print([x**2 for x in l if x**2 > 25])\n",
     "print([x for x in l if x**2 > 25])"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "7fc66733",
+   "metadata": {},
+   "source": [
+    "#### 📍 NOTE 📍"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "df92ce1b",
+   "metadata": {},
+   "source": [
+    "Difference between thease two:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "id": "517c8f3f",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "l = [1, 2, 3, 4]\n",
+    "\n",
+    "def sq(x):\n",
+    "    return x ** 2"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "79a4af5b",
+   "metadata": {},
+   "source": [
+    "> When we use map it's like generator and doesn't calculate it.\n",
+    "\n",
+    "> Memory efficiency."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "id": "6c026729",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "1\n",
+      "4\n",
+      "9\n",
+      "16\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Use map\n",
+    "\n",
+    "result = map(sq, l)\n",
+    "for i in result:\n",
+    "    print(i)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "d8f31a0d",
+   "metadata": {},
+   "source": [
+    "> When we use list comprehemsion, it's calculate all of theme"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "id": "5379c2fc",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[1, 4, 9, 16]\n"
+     ]
+    }
+   ],
+   "source": [
+    "# use list comprehension\n",
+    "\n",
+    "result = [x**2 for x in l]\n",
+    "print(result)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "d19dccca",
+   "metadata": {},
+   "source": [
+    "> We can use generator"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "id": "24b840f2",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "<generator object <genexpr> at 0x7f3644498790>\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Use generator comprehension\n",
+    "\n",
+    "result = (x**2 for x in l)\n",
+    "print(result)"
+   ]
   }
  ],
  "metadata": {