fermetures.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Fonctions et Fermetures\n",
    "================"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Exemple\n",
    "----------\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "* Définition d'une variable globale :"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "var atmosphere;"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "* initialisation de la variable :"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "\"de l'air\""
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "atmosphere=\"de l'air\";"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "* On définit la fonction \"respire\" à l'aide d'une expression :"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "var respire=function () {\n",
    "\tconsole.log(\"je respire \"+atmosphere); \n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "je respire de l'air\n"
     ]
    }
   ],
   "source": [
    "respire();"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "\"de l'eau\""
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "atmosphere=\"de l'eau\";"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "je respire de l'eau\n"
     ]
    }
   ],
   "source": [
    "respire();"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "collapsed": true
   },
   "source": [
    "### Définition d'une fermeture"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "function () {\n",
       "            console.log(\"je respire \"+atmosphere);\n",
       "            }"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "respire = function (){\n",
    "            let atmosphere=\"de l'air\"\n",
    "            return function () {\n",
    "            console.log(\"je respire \"+atmosphere);\n",
    "            }\n",
    "        }();\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "\"de l'eau\""
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "atmosphere"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "je respire de l'air\n"
     ]
    }
   ],
   "source": [
    "respire();"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "\"de l'hydrogène sulfuré\""
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "atmosphere = \"de l'hydrogène sulfuré\";"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "je respire de l'air\n"
     ]
    }
   ],
   "source": [
    "respire();"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Et si je veux changer de mélange ?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "function () {\n",
       "            console.log(\"je respire \"+atmosphere);\n",
       "            }"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "var melange=function (atmosphere){\n",
    "            return function () {\n",
    "            console.log(\"je respire \"+atmosphere);\n",
    "            }\n",
    "        };\n",
    "respire=melange(\"de l'air\");"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "je respire de l'air\n"
     ]
    }
   ],
   "source": [
    "respire();"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "function () {\n",
       "            console.log(\"je respire \"+atmosphere);\n",
       "            }"
      ]
     },
     "execution_count": 14,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "respire=melange(\"du Nitrox\");"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "je respire du Nitrox\n"
     ]
    }
   ],
   "source": [
    "respire();"
   ]
  }
 ],
 "metadata": {
  "anaconda-cloud": {},
  "kernelspec": {
   "display_name": "Javascript (Node.js)",
   "language": "javascript",
   "name": "javascript"
  },
  "language_info": {
   "file_extension": ".js",
   "mimetype": "application/javascript",
   "name": "javascript",
   "version": "10.13.0"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 1
}