lambda.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Lambda function"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "lambda x: x**2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Data type of lambda:<class 'function'>\n",
      "Lambda putput:LambdaLambda\n"
     ]
    }
   ],
   "source": [
    "func = lambda x: x*2\n",
    "print('Data type of lambda:' + str(type(func)))\n",
    "print('Lambda putput:' + str(func('Lambda')))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Multiple arguments to lambda"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "50"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "multifunc = lambda x,y,z: x*y*z\n",
    "multifunc(1, 5, 10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "400\n",
      "2000\n"
     ]
    }
   ],
   "source": [
    "multifunc = lambda x=2,y=2,z=100: x*y*z\n",
    "print(multifunc(), multifunc(10), sep='\\n')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### No argument Lambda"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[1, 2, 3]\n",
      "True\n"
     ]
    }
   ],
   "source": [
    "noargList = lambda: [1, 2, 3]\n",
    "print(noargList())\n",
    "\n",
    "noargBool = lambda: True\n",
    "print(noargBool())"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Lambda with map"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[10, 50, 100]\n"
     ]
    }
   ],
   "source": [
    "L = [1, 5, 10]\n",
    "mapList = list(map(lambda x, y=10: x*y, L))\n",
    "print(mapList)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Lambda with filter"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[5, 10]\n"
     ]
    }
   ],
   "source": [
    "print(list(filter(lambda x: x%5==0, L)))"
   ]
  }
 ],
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