{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "cf-0",
   "metadata": {},
   "source": "# Control flow and functions\n\nBranches, loops, anonymous functions, and named functions kept in `.m`\nfiles alongside the notebook."
  },
  {
   "cell_type": "markdown",
   "id": "cf-1",
   "metadata": {},
   "source": "## if / elseif / else"
  },
  {
   "cell_type": "code",
   "id": "cf-2",
   "metadata": {},
   "execution_count": null,
   "outputs": [],
   "source": "x = 7;\nif mod(x, 2) == 0\n    disp('even')\nelseif x > 5\n    disp('odd and > 5')\nelse\n    disp('odd and <= 5')\nend"
  },
  {
   "cell_type": "markdown",
   "id": "cf-3",
   "metadata": {},
   "source": "## for and while loops"
  },
  {
   "cell_type": "code",
   "id": "cf-4",
   "metadata": {},
   "execution_count": null,
   "outputs": [],
   "source": "total = 0;\nfor k = 1:10\n    total = total + k;\nend\ntotal"
  },
  {
   "cell_type": "code",
   "id": "cf-5",
   "metadata": {},
   "execution_count": null,
   "outputs": [],
   "source": "n = 0; p = 1;\nwhile p < 1000\n    n = n + 1;\n    p = p * 2;\nend\nfprintf('2^%d = %d is the first power of two >= 1000\\n', n, p);"
  },
  {
   "cell_type": "markdown",
   "id": "cf-6",
   "metadata": {},
   "source": "## switch"
  },
  {
   "cell_type": "code",
   "id": "cf-7",
   "metadata": {},
   "execution_count": null,
   "outputs": [],
   "source": "grade = 'B';\nswitch grade\n    case 'A'\n        disp('excellent')\n    case {'B', 'C'}\n        disp('good')\n    otherwise\n        disp('try again')\nend"
  },
  {
   "cell_type": "markdown",
   "id": "cf-8",
   "metadata": {},
   "source": "## Anonymous functions, arrayfun, and cellfun"
  },
  {
   "cell_type": "code",
   "id": "cf-9",
   "metadata": {},
   "execution_count": null,
   "outputs": [],
   "source": "sq = @(x) x.^2;\nsq(1:5)\narrayfun(@(k) k^2, 1:5)\ncellfun(@numel, {'a', 'bb', 'ccc'})"
  },
  {
   "cell_type": "markdown",
   "id": "cf-10",
   "metadata": {},
   "source": "## Named functions in `.m` files\n\nCells work like the MATLAB console, so named functions live in `.m` files\nnext to the notebook. This one ships with [fib.m](./fib.m) and\n[minmax.m](./minmax.m); the kernel syncs them into the session so you can\ncall them from cells (and edit them in the file browser)."
  },
  {
   "cell_type": "code",
   "id": "cf-11",
   "metadata": {},
   "execution_count": null,
   "outputs": [],
   "source": "fibs = arrayfun(@fib, 1:10)\n[lo, hi] = minmax([3 -1 7 2])"
  }
 ],
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  "kernelspec": {
   "display_name": "numbl (MATLAB syntax)",
   "language": "numbl",
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  "language_info": {
   "codemirror_mode": "octave",
   "file_extension": ".m",
   "mimetype": "text/x-octave",
   "name": "numbl",
   "nbconvert_exporter": "script",
   "pygments_lexer": "matlab"
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 },
 "nbformat": 4,
 "nbformat_minor": 5
}