{"id":20287,"date":"2022-11-09T06:40:59","date_gmt":"2022-11-09T01:10:59","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-why-isnt-stdset-just-called-stdbinary_tree-closed\/"},"modified":"2022-11-09T06:40:59","modified_gmt":"2022-11-09T01:10:59","slug":"solved-why-isnt-stdset-just-called-stdbinary_tree-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-why-isnt-stdset-just-called-stdbinary_tree-closed\/","title":{"rendered":"[Solved] Why isn’t std::set just called std::binary_tree? [closed]"},"content":{"rendered":"

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Why isn’t std::set just called std::binary_tree?<\/p>\n<\/blockquote>\n

Because<\/p>\n

    \n
  1. Tree doesn’t describe how the interface is used. Set does.<\/li>\n
  2. std::set<\/code> does not provide sufficient operations to be used as a general purpose search tree. It only provides an interface to a particular application of a search tree: The representation of a set.<\/li>\n
  3. Technically the standard doesn’t specify that std::set<\/code> is a binary search tree; although red-black BST may be the only data structure that can achieve the requirements imposed on std::set<\/code>, and the interface has carefully been specified with that data structure in mind, the choice of internal data structure is an implementation detail.<\/li>\n
  4. For same reason std::unordered_set<\/code> isn’t called std::hash_table<\/code>.<\/li>\n<\/ol>\n
    \n

    std::unordered_set is a real set, but std::set is a binary search tree<\/p>\n<\/blockquote>\n

    std::unordered_set<\/code> isn’t any more or less “real” than std::set<\/code> is. They are both sets with slightly different requirements and guarantees; One designed to be implementable using a tree, and another designed to be implementable using a hash table.<\/p>\n

    P.S. Tree and a hash table are not the only ways to represent a set. One internal data structure that can implement most – but not all – of std::set<\/code> is a sorted vector. Especially for small sets, a sorted vector can be much faster than std::set<\/code>.<\/p>\n<\/p><\/div>\n

    <\/div>\n<\/div>\n

    1<\/span> <\/p><\/div>\n<\/div>\n

    [ad_2]<\/p>\n

    solved Why isn’t std::set just called std::binary_tree? [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"

    [ad_1] Why isn’t std::set just called std::binary_tree? Because Tree doesn’t describe how the interface is used. Set does. std::set does not provide sufficient operations to be used as a general purpose search tree. It only provides an interface to a particular application of a search tree: The representation of a set. Technically the standard doesn’t … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[2362,2566,324,859,441],"class_list":["post-20287","post","type-post","status-publish","format-standard","hentry","category-solved","tag-binary-search-tree","tag-binary-tree","tag-c","tag-data-structures","tag-set"],"yoast_head":"\n[Solved] Why isn't std::set just called std::binary_tree? 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