eg/magics.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "This notebook has examples of using magics."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "If the first line of a cell starts with %% or #%, the kernel treats it as a \"magic\".\n",
    "`javascript` will just send the contents as javascript to the browser.  In this context, you can use  `element` to manipulate the output area."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "application/javascript": [
       "element.append('foo')"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "%% javascript\n",
    "element.append('foo')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/javascript": [
       "for (var i=0;i<4;i++) {\n",
       "  element.append(i)\n",
       "}"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "#% javascript\n",
    "for (var i=0;i<4;i++) {\n",
    "  element.append(i)\n",
    "}"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "To generate output of type latex, use the `#% latex` magic."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/latex": [
       "\\begin{equation*} \\frac{1}{2} \\end{equation*}"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#% latex\n",
    "my $x = '\\begin{equation*} \\frac{1}{2} \\end{equation*}';\n",
    "$x"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/latex": [
       "\\begin{equation}\n",
       "\\frac{1}{2}\n",
       "\\end{equation}\n"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "%% latex(equation)\n",
    "'\\frac{1}{2}'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "&frac12;\n"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/latex": [
       "\\begin{equation}\n",
       "\\frac{1}{2}\n",
       "\\end{equation}\n"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#% latex(equation) > html\n",
    "say '&frac12;';\n",
    "'\\frac{1}{2}';"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(Routine::WrapHandle.new Routine::WrapHandle.new)"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Rat.^find_method($_)\n",
    "    .wrap( sub ($x) {\n",
    "        '\\frac{' ~ $x.numerator ~ '}{' ~ $x.denominator ~ '}'\n",
    "    } ) for <gist Str>;"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/latex": [
       "\\begin{equation}\n",
       "\\frac{1}{5} + \\frac{9}{10} - \\frac{1}{10}\n",
       "\\end{equation}\n"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "%% latex(equation)\n",
    "\"{0.2} + {0.9} - {0.1}\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/latex": [
       "\\begin{equation}\n",
       "\\frac{2}{3} + \\frac{1}{8} == \\frac{19}{24}\n",
       "\\end{equation}\n"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "%% latex(equation)\n",
    "my $x = 2/3;\n",
    "my $y = 1/8;\n",
    "\"$x + $y == { $x + $y }\""
   ]
  }
 ],
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   "mimetype": "text/x-raku",
   "name": "raku",
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 "nbformat": 4,
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}