{"id":185,"date":"2012-12-21T15:25:46","date_gmt":"2012-12-21T15:25:46","guid":{"rendered":"http:\/\/ellignostage.test\/?p=185"},"modified":"2021-05-26T13:08:37","modified_gmt":"2021-05-26T18:08:37","slug":"tips-avec-tableau","status":"publish","type":"post","link":"https:\/\/elligno.com\/fr\/tips-avec-tableau\/","title":{"rendered":"Boost et STL"},"content":{"rendered":"\n

Librairie Boost<\/span><\/strong><\/span><\/p>\n\n\n\n

Nous commen\u00e7ons avec une introduction \u00e0 la STL (Standard Template Library), ce que l’on appelle collection en C++. C’est le pain et le beurre du programmeur. La STL offre un ensemble de container et d’algorithmes. Le c\u0153ur de la STL est le concept iterator<\/i><\/b> qui permet de traverser la collection. La STL a \u00e9t\u00e9 design\u00e9<\/span> pour \u00eatre utilis\u00e9<\/span> avec un style de programmation appel\u00e9 \u00abprogrammation g\u00e9n\u00e9rique<\/i>\u00bb mieux connu sous le nom de Template en C++. Ceci permet de traiter le type de data du container de fa\u00e7on transparente.<\/span><\/p>\n\n\n\n

Ci-dessous un exemple simple de l’utilisation de la STL et de Boost. Nous avons deux functions qui permettent d’imprimer le contenu d’une collection<\/span><\/p>\n\n\n\n

template<\/span><\/span><<\/span>typename<\/span><\/span>Range<\/span><\/span>><\/span><\/span>void <\/span><\/span>printRange<\/span><\/span>( <\/span>const <\/span><\/span>Range<\/span><\/span>& <\/span>aRange<\/span><\/span>)<\/span><\/span>{<\/span>\n

 <\/p>\n

std<\/span><\/span>::<\/span>cout<\/span><\/span> << <\/span>\u00ab\u00a0We are printing the range\\n\u00a0\u00bb<\/span><\/span>;<\/span><\/span><\/p>\n

typedef <\/span><\/span>boost<\/span><\/span>::<\/span>range_iterator<\/span><\/span><<\/span>Range<\/span><\/span>>::<\/span>type <\/span><\/span>iter_type<\/span><\/span>;<\/span><\/span><\/p>\n

typedef <\/span><\/span>std<\/span><\/span>::<\/span>iterator_traits<\/span><\/span><<\/span>iter_type<\/span><\/span>>::<\/span>value_type <\/span><\/span>value_type<\/span><\/span>;<\/span><\/span><\/p>\n

std<\/span><\/span>::<\/span>copy<\/span><\/span>( <\/span>boost<\/span><\/span>::<\/span>begin<\/span><\/span>(<\/span>aRange<\/span><\/span>), <\/span>boost<\/span><\/span>::<\/span>end<\/span><\/span>(<\/span>aRange<\/span><\/span>),<\/span><\/span><\/p>\n

std<\/span><\/span>::<\/span>ostream_iterator<\/span><\/span><<\/span>value_type<\/span><\/span>>(<\/span>std<\/span><\/span>::<\/span>cout<\/span><\/span>,<\/span>\u00ab\u00a0\\n\u00a0\u00bb<\/span><\/span>));<\/span><\/span><\/p>\n

}<\/span><\/p>\n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

La meme fonction mais en utilisant la Standard template Library (STL)<\/span><\/p>\n\n\n\n

template<\/span><\/span><<\/span>typename<\/span><\/span>CONT<\/span><\/span>> <\/span>\/\/ container<\/span><\/span><\/span>void <\/span><\/span>print_container<\/span><\/span>( <\/span>const<\/span><\/span>CONT<\/span><\/span>& <\/span>aCont2Print<\/span><\/span>)<\/span><\/span>{<\/span>\n

 <\/p>\n

\/\/ typename because CONT is a argument template <\/span><\/span><\/p>\n

\/\/ we have to give an hint to the compiler<\/span><\/span><\/p>\n

typedef<\/span><\/span>typename<\/span><\/span>CONT<\/span><\/span>::<\/span>value_type <\/span><\/span>ctype<\/span><\/span>;<\/span><\/span><\/p>\n

\/\/ define an iterator and a const iterator<\/span><\/span><\/p>\n

typedef <\/span><\/span>typename <\/span><\/span>CONT<\/span><\/span>::<\/span>iterator <\/span><\/span>iter_range<\/span><\/span>;<\/span><\/span><\/p>\n

typedef <\/span><\/span>typename <\/span><\/span>CONT<\/span><\/span>::<\/span>const_iterator <\/span><\/span>citer_range<\/span><\/span>;<\/span><\/span><\/p>\n

\/\/  initialize range iterators<\/span><\/span><\/p>\n

citer_range<\/span><\/span>w_beg<\/span><\/span> = <\/span>aCont2Print<\/span><\/span>.<\/span>begin<\/span><\/span>();<\/span><\/span><\/p>\n

citer_range<\/span><\/span>w_end<\/span><\/span> = <\/span>aCont2Print<\/span><\/span>.<\/span>end<\/span><\/span>();<\/span><\/span><\/p>\n

std<\/span><\/span>::<\/span>copy<\/span><\/span>(<\/span>w_beg<\/span><\/span>,<\/span>w_end<\/span><\/span>, <\/span><\/span><\/p>\n

std<\/span><\/span>::<\/span>ostream_iterator<\/span><\/span><<\/span>ctype<\/span><\/span>>(<\/span>std<\/span><\/span>::<\/span>cout<\/span><\/span>,<\/span>\u00a0\u00bb \u00ab\u00a0<\/span><\/span>));<\/span><\/span><\/p>\n

std<\/span><\/span>::<\/span>cout<\/span><\/span> << <\/span>\u00ab\u00a0\\n\u00a0\u00bb<\/span><\/span>;<\/span><\/span><\/p>\n

}<\/span><\/p>\n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

 <\/span><\/p>\n\n\n\n

\u00c2 <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Dans ce premier tips and tricks, nous presentons des exemples de programmation C++ tir\u00e9s de notre environnement de programmation \u00ab\u00a0Elligno Virtual Physics Studio\u00a0\u00bb.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-185","post","type-post","status-publish","format-standard","hentry","category-trucs-et-astuces"],"yoast_head":"\nBoost et STL - Elligno<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/elligno.com\/fr\/tips-avec-tableau\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Boost et STL - Elligno\" \/>\n<meta property=\"og:description\" content=\"Dans ce premier tips and tricks, nous presentons des exemples de programmation C++ tir\u00e9s de notre environnement de programmation "Elligno Virtual Physics Studio".\" \/>\n<meta property=\"og:url\" content=\"https:\/\/elligno.com\/fr\/tips-avec-tableau\/\" \/>\n<meta property=\"og:site_name\" content=\"Elligno\" \/>\n<meta property=\"article:published_time\" content=\"2012-12-21T15:25:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-05-26T18:08:37+00:00\" \/>\n<meta name=\"author\" content=\"Elligno\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Elligno\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/elligno.com\\\/fr\\\/tips-avec-tableau\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/elligno.com\\\/fr\\\/tips-avec-tableau\\\/\"},\"author\":{\"name\":\"Elligno\",\"@id\":\"https:\\\/\\\/elligno.com\\\/fr\\\/#\\\/schema\\\/person\\\/95f2e5f7a779215bc13c98f05efafc8b\"},\"headline\":\"Boost et STL\",\"datePublished\":\"2012-12-21T15:25:46+00:00\",\"dateModified\":\"2021-05-26T18:08:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/elligno.com\\\/fr\\\/tips-avec-tableau\\\/\"},\"wordCount\":296,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/elligno.com\\\/fr\\\/#organization\"},\"articleSection\":[\"Trucs et astuces\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/elligno.com\\\/fr\\\/tips-avec-tableau\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/elligno.com\\\/fr\\\/tips-avec-tableau\\\/\",\"url\":\"https:\\\/\\\/elligno.com\\\/fr\\\/tips-avec-tableau\\\/\",\"name\":\"Boost et STL - 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