{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "ang: undefined;\n",
      " cannot reference an identifier before its definition\n",
      "  in module: top-level\n",
      "  context...:\n",
      "   eval-one-top12\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:693:3\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:510:0: call-with-custodian-shutdown\n",
      "   /usr/share/racket/collects/racket/private/more-scheme.rkt:148:2: call-with-break-parameterization\n",
      "   .../more-scheme.rkt:261:28\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:878:5: loop\n"
     ]
    }
   ],
   "source": [
    "ang racket"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "(require racket/base)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<code>1</code>"
      ],
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "(quote 1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<code>'(a b c)</code>"
      ],
      "text/plain": [
       "'(a b c)"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "(quote (a b c))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "empty: undefined;\n",
      " cannot reference an identifier before its definition\n",
      "  in module: top-level\n",
      "  context...:\n",
      "   eval-one-top12\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:510:0: call-with-custodian-shutdown\n",
      "   /usr/share/racket/collects/racket/private/more-scheme.rkt:148:2: call-with-break-parameterization\n",
      "   .../more-scheme.rkt:261:28\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:878:5: loop\n"
     ]
    }
   ],
   "source": [
    "empty"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [],
   "source": [
    "(require racket)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<code>'()</code>"
      ],
      "text/plain": [
       "'()"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "empty"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<code>#&lt;procedure:first&gt;</code>"
      ],
      "text/plain": [
       "#<procedure:first>"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "first"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "member?: undefined;\n",
      " cannot reference an identifier before its definition\n",
      "  in module: top-level\n",
      "  context...:\n",
      "   eval-one-top12\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:510:0: call-with-custodian-shutdown\n",
      "   /usr/share/racket/collects/racket/private/more-scheme.rkt:148:2: call-with-break-parameterization\n",
      "   .../more-scheme.rkt:261:28\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:878:5: loop\n"
     ]
    }
   ],
   "source": [
    "member?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "?: undefined;\n",
      " cannot reference an identifier before its definition\n",
      "  in module: top-level\n",
      "  context...:\n",
      "   eval-one-top12\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:510:0: call-with-custodian-shutdown\n",
      "   /usr/share/racket/collects/racket/private/more-scheme.rkt:148:2: call-with-break-parameterization\n",
      "   .../more-scheme.rkt:261:28\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:878:5: loop\n"
     ]
    }
   ],
   "source": [
    "?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "%lsmagic: undefined;\n",
      " cannot reference an identifier before its definition\n",
      "  in module: top-level\n",
      "  context...:\n",
      "   eval-one-top12\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:510:0: call-with-custodian-shutdown\n",
      "   /usr/share/racket/collects/racket/private/more-scheme.rkt:148:2: call-with-break-parameterization\n",
      "   .../more-scheme.rkt:261:28\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:878:5: loop\n"
     ]
    }
   ],
   "source": [
    "%lsmagic"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "%magic: undefined;\n",
      " cannot reference an identifier before its definition\n",
      "  in module: top-level\n",
      "  context...:\n",
      "   eval-one-top12\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:510:0: call-with-custodian-shutdown\n",
      "   /usr/share/racket/collects/racket/private/more-scheme.rkt:148:2: call-with-break-parameterization\n",
      "   .../more-scheme.rkt:261:28\n",
      "   /usr/share/racket/pkgs/sandbox-lib/racket/sandbox.rkt:878:5: loop\n"
     ]
    }
   ],
   "source": [
    "%magic"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "'(testing hours X got: 0 expected: #<procedure:...lectures/hw0.rkt:149:19>)\n",
      "'(testing kg2lb X got: () expected: (1 pound 1 ounce))\n",
      "'(testing kg2lb X got: () expected: (2 pounds 3 ounces))\n",
      "'(testing kg2lb X got: () expected: (4 pounds 6 ounces))\n",
      "'(testing kg2lb X got: () expected: (6 pounds 9 ounces))\n",
      "'(testing kg2lb X got: () expected: (8 pounds 12 ounces))\n",
      "'(testing kg2lb X got: () expected: (19 pounds 12 ounces))\n",
      "'(testing kg2lb X got: () expected: (22 pounds 0 ounces))\n",
      "'(testing kg2lb X got: () expected: (220 pounds 0 ounces))\n",
      "'(testing timezone X got: () expected: #<procedure:...lectures/hw0.rkt:160:27>)\n"
     ]
    }
   ],
   "source": [
    "(require \"hw0.rkt\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<code>#&lt;procedure:kg2lb&gt;</code>"
      ],
      "text/plain": [
       "#<procedure:kg2lb>"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "kg2lb"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Racket",
   "language": "racket",
   "name": "racket"
  },
  "language_info": {
   "codemirror_mode": "scheme",
   "file_extension": ".rkt",
   "mimetype": "text/x-racket",
   "name": "Racket",
   "pygments_lexer": "racket",
   "version": "7.4"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 4
}