00.0 - Calculator.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Basic arithmetic and boolean algebra\n",
    "[reference](http://learnyouahaskell.com/starting-out)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "3"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "1+2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "36"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "6 * 6"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0.3333333333333333"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "1 / 3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1000.0"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "10 ** 3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "False"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "1 > 2"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Quite similar to Python so far, but hang on..."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [],
   "source": [
    "-- This is a comment"
   ]
  },
  {
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   "execution_count": 7,
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       "<style>/* Styles used for the Hoogle display in the pager */\n",
       ".hoogle-doc {\n",
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       "padding-left: 0.4em;\n",
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       ".hoogle-text {\n",
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       "font-weight: bold;\n",
       "color: red;\n",
       "}\n",
       ".suggestion-name {\n",
       "font-weight: bold;\n",
       "}\n",
       "</style><span class='err-msg'>&lt;interactive&gt;:1:1: error: Precedence parsing error cannot mix ‘*’ [infixl 7] and prefix `-' [infixl 6] in the same infix expression</span>"
      ],
      "text/plain": [
       "<interactive>:1:1: error: Precedence parsing error cannot mix ‘*’ [infixl 7] and prefix `-' [infixl 6] in the same infix expression"
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   "source": [
    "5 * -3"
   ]
  },
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   "cell_type": "code",
   "execution_count": 8,
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   "outputs": [
    {
     "data": {
      "text/plain": [
       "-15"
      ]
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   "source": [
    "5 * (-3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "3"
      ]
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     "metadata": {},
     "output_type": "display_data"
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   ],
   "source": [
    "1 + 2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
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       "}\n",
       ".suggestion-name {\n",
       "font-weight: bold;\n",
       "}\n",
       "</style><div class=\"suggestion-name\" style=\"clear:both;\">Evaluate</div><div class=\"suggestion-row\" style=\"float: left;\"><div class=\"suggestion-warning\">Found:</div><div class=\"highlight-code\" id=\"haskell\">True && False</div></div><div class=\"suggestion-row\" style=\"float: left;\"><div class=\"suggestion-warning\">Why Not:</div><div class=\"highlight-code\" id=\"haskell\">False</div></div>"
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      "text/plain": [
       "Line 1: Evaluate\n",
       "Found:\n",
       "True && False\n",
       "Why not:\n",
       "False"
      ]
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     "output_type": "display_data"
    },
    {
     "data": {
      "text/plain": [
       "False"
      ]
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     "output_type": "display_data"
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   "source": [
    "True && False"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Thank you ghc :P"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
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   "outputs": [
    {
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       "}\n",
       ".suggestion-name {\n",
       "font-weight: bold;\n",
       "}\n",
       "</style><div class=\"suggestion-name\" style=\"clear:both;\">Evaluate</div><div class=\"suggestion-row\" style=\"float: left;\"><div class=\"suggestion-warning\">Found:</div><div class=\"highlight-code\" id=\"haskell\">True || False</div></div><div class=\"suggestion-row\" style=\"float: left;\"><div class=\"suggestion-warning\">Why Not:</div><div class=\"highlight-code\" id=\"haskell\">True</div></div>"
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      "text/plain": [
       "Line 1: Evaluate\n",
       "Found:\n",
       "True || False\n",
       "Why not:\n",
       "True"
      ]
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     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/plain": [
       "True"
      ]
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     "output_type": "display_data"
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   "source": [
    "True || False"
   ]
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  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "5 /= 4"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
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   "outputs": [
    {
     "data": {
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       ".suggestion-name {\n",
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       "}\n",
       "</style><div class=\"suggestion-name\" style=\"clear:both;\">Evaluate</div><div class=\"suggestion-row\" style=\"float: left;\"><div class=\"suggestion-warning\">Found:</div><div class=\"highlight-code\" id=\"haskell\">not False</div></div><div class=\"suggestion-row\" style=\"float: left;\"><div class=\"suggestion-warning\">Why Not:</div><div class=\"highlight-code\" id=\"haskell\">True</div></div>"
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       "Line 1: Evaluate\n",
       "Found:\n",
       "not False\n",
       "Why not:\n",
       "True"
      ]
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     "output_type": "display_data"
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    {
     "data": {
      "text/plain": [
       "True"
      ]
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   ],
   "source": [
    "not False"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<style>/* Styles used for the Hoogle display in the pager */\n",
       ".hoogle-doc {\n",
       "display: block;\n",
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       "padding-left: 0.4em;\n",
       "}\n",
       ".hoogle-code {\n",
       "display: block;\n",
       "font-family: monospace;\n",
       "white-space: pre;\n",
       "}\n",
       ".hoogle-text {\n",
       "display: block;\n",
       "}\n",
       ".hoogle-name {\n",
       "color: green;\n",
       "font-weight: bold;\n",
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       ".hoogle-head {\n",
       "font-weight: bold;\n",
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       ".hoogle-sub {\n",
       "display: block;\n",
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       ".hoogle-module {\n",
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       ".get-type {\n",
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       "}\n",
       ".suggestion-name {\n",
       "font-weight: bold;\n",
       "}\n",
       "</style><span class='err-msg'>&lt;interactive&gt;:1:9: error:<br/>    • No instance for (Num Bool) arising from the literal ‘1’<br/>    • In the second argument of ‘(==)’, namely ‘1’<br/>      In the expression: True == 1<br/>      In an equation for ‘it’: it = True == 1</span>"
      ],
      "text/plain": [
       "<interactive>:1:9: error:\n",
       "    • No instance for (Num Bool) arising from the literal ‘1’\n",
       "    • In the second argument of ‘(==)’, namely ‘1’\n",
       "      In the expression: True == 1\n",
       "      In an equation for ‘it’: it = True == 1"
      ]
     },
     "metadata": {},
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   ],
   "source": [
    "True == 1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "False"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "1.0 > 2"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Functions"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "succ (-1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "9"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
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   ],
   "source": [
    "min 10 9"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Functions have the highest precedence!"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "16"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "succ 9 + max 5 4 + 1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "3"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "div 10 3"
   ]
  }
 ],
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