{"id":105091,"date":"2025-04-08T08:37:28","date_gmt":"2025-04-08T04:07:28","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/motivation-behind-c-concepts-402i\/"},"modified":"2025-04-08T08:37:28","modified_gmt":"2025-04-08T04:07:28","slug":"motivation-behind-c-concepts-402i","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/motivation-behind-c-concepts-402i\/","title":{"rendered":"\u0627\u0646\u06af\u06cc\u0632\u0647 \u067e\u0634\u062a \u0645\u0641\u0627\u0647\u06cc\u0645 C ++ &#8211; \u062c\u0627\u0645\u0639\u0647 dev"},"content":{"rendered":"<div data-article-id=\"2390130\" id=\"article-body\">\n<p>C ++ 20 \u0645\u0639\u0631\u0641\u06cc \u0634\u062f <strong><em>\u0645\u0641\u0627\u0647\u06cc\u0645<\/em><\/strong>\u0628\u0634\u0631 \u0622\u0646\u0647\u0627 \u0686\u0647 \u0647\u0633\u062a\u0646\u062f\u061f \u0686\u0631\u0627 \u0628\u0627\u06cc\u062f \u0628\u0647 \u0622\u0646\u0647\u0627 \u0627\u0647\u0645\u06cc\u062a \u062f\u0647\u0645\u061f \u0686\u06af\u0648\u0646\u0647 \u0627\u0632 \u0622\u0646\u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u0645\u061f<\/p>\n<p>\u0645\u0641\u0627\u0647\u06cc\u0645 \u0627\u0628\u0632\u0627\u0631\u06cc \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u0628\u0631\u0627\u06cc \u06a9\u0645\u06a9 \u0628\u0647 \u0634\u0645\u0627 \u062f\u0631 \u0646\u0648\u0634\u062a\u0646 \u06a9\u062f \u0639\u0645\u0648\u0645\u06cc \u0628\u0627 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u0647\u0627\u06cc \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0634\u062f\u0647 \u062f\u0631 \u0632\u0645\u0627\u0646 \u06a9\u0627\u0645\u067e\u0627\u06cc\u0644 \u0627\u0633\u062a. <\/p>\n<p>\u0627\u06cc\u0646 \u0628\u0647 \u0686\u0647 \u0645\u0639\u0646\u06cc \u0627\u0633\u062a\u061f<\/p>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u06af\u0648\u06cc\u06cc\u0645 \u06a9\u0647 \u0645\u0646 \u06cc\u06a9 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u062f\u0631\u0633\u062a \u0645\u06cc \u06a9\u0646\u0645 \u0648 \u0645\u06cc \u062e\u0648\u0627\u0647\u0645 \u062a\u0627\u0628\u0639\u06cc \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u0645 \u06a9\u0647 \u0628\u0647 \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u0645\u0646 \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc \u062f\u0647\u062f \u062f\u0631 \u06cc\u06a9 \u0639\u062f\u062f \u0635\u062d\u06cc\u062d \u0645\u0641\u0631\u062f \u060c \u0634\u0646\u0627\u0648\u0631 \u06cc\u0627 \u0631\u0634\u062a\u0647 \u0627\u06cc \u062f\u0631 \u0622\u0646 \u0639\u0628\u0648\u0631 \u06a9\u0646\u0646\u062f. <\/p>\n<p>\u0628\u0627 \u0627\u06cc\u0646 \u062d\u0627\u0644 \u060c \u0645\u0646 \u0646\u0645\u06cc \u062e\u0648\u0627\u0647\u0645 \u0627\u062c\u0627\u0632\u0647 \u062f\u0647\u0645 \u06a9\u0647 \u0622\u0646\u0647\u0627 \u062f\u0631 \u06cc\u06a9 \u0628\u0648\u0644\u06cc \u0639\u0628\u0648\u0631 \u06a9\u0646\u0646\u062f. <\/p>\n<p>\u0622\u06cc\u0627 \u0631\u0627\u0647\u06cc \u0628\u0631\u0627\u06cc \u062a\u062d\u0642\u0642 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0628\u0627 \u0646\u0648\u0634\u062a\u0646 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f\u061f <strong><em>\u0641\u0642\u0637 \u06cc\u06a9 \u0639\u0645\u0644\u06a9\u0631\u062f<\/em><\/strong>\u061f<\/p>\n<p>\u0628\u0644\u0647<\/p>\n<p>\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u0628\u0627 \u0627\u0644\u06af\u0648\u0647\u0627 \u0648 \u0645\u0641\u0627\u0647\u06cc\u0645 C ++ \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u06cc\u0645. (\u0628\u0627 \u062a\u0634\u06a9\u0631 C ++ 20)<\/p>\n<p>\u062e\u0648\u0628 \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0627\u0632 \u0647\u0645\u0627\u0646 \u0627\u0628\u062a\u062f\u0627 \u0634\u0631\u0648\u0639 \u06a9\u0646\u06cc\u0645 &#8230; \u0642\u0627\u0644\u0628 \u0647\u0627<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter-rtl ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/nabfollower.com\/blog\/motivation-behind-c-concepts-402i\/#%D8%A7%D9%84%DA%AF%D9%88%D9%87%D8%A7%DB%8C\" >\u0627\u0644\u06af\u0648\u0647\u0627\u06cc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nabfollower.com\/blog\/motivation-behind-c-concepts-402i\/#std_enable_if\" >std::enable_if<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nabfollower.com\/blog\/motivation-behind-c-concepts-402i\/#%D9%85%D9%81%D8%A7%D9%87%DB%8C%D9%85\" >\u0645\u0641\u0627\u0647\u06cc\u0645<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nabfollower.com\/blog\/motivation-behind-c-concepts-402i\/#%D9%86%D8%AA%DB%8C%D8%AC%D9%87_%DA%AF%DB%8C%D8%B1%DB%8C\" >\u0646\u062a\u06cc\u062c\u0647 \u06af\u06cc\u0631\u06cc<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D9%84%DA%AF%D9%88%D9%87%D8%A7%DB%8C\"><\/span>\n<p>  \u0627\u0644\u06af\u0648\u0647\u0627\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u062e\u0648\u0628 \u060c \u0628\u06af\u0630\u0627\u0631\u06cc\u062f \u0628\u06af\u0648\u06cc\u062f \u0645\u0646 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u0627\u06cc \u062a\u0647\u06cc\u0647 \u0645\u06cc \u06a9\u0646\u0645 \u06a9\u0647 \u06cc\u06a9 \u0639\u062f\u062f \u0635\u062d\u06cc\u062d \u060c \u0634\u0646\u0627\u0648\u0631 \u06cc\u0627 \u0631\u0634\u062a\u0647 \u0631\u0627 \u0628\u067e\u0630\u06cc\u0631\u062f. <\/p>\n<p>\u06cc\u06a9\u06cc \u0627\u0632 \u0631\u0627\u0647 \u0647\u0627\u06cc \u0627\u0646\u062c\u0627\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0645\u0627\u0646\u0646\u062f \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0628\u0627 \u0627\u0636\u0627\u0641\u0647 \u0628\u0627\u0631 \u0639\u0645\u0644\u06a9\u0631\u062f:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>#include <iostream>\n\nvoid function(int v){\n        std::cout &lt;&lt; \"function: \" &lt;&lt; v &lt;&lt; std::endl;\n}\n\nvoid function(double v){\n        std::cout &lt;&lt; \"function: \" &lt;&lt; v &lt;&lt; std::endl;\n}\n\nvoid function(std::string v){\n        std::cout &lt;&lt; \"function: \" &lt;&lt; v &lt;&lt; std::endl;\n}\n\nint main(int argc, char** argv){\n        function(\"hi\");\n        function(2);\n}\n<\/iostream><\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0628\u0644\u0647 \u060c \u0647\u0645\u0647 \u062a\u0648\u0627\u0628\u0639 \u0647\u0645\u0627\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc \u062f\u0647\u0646\u062f \u0648 \u0627\u06cc\u0646 \u06a9\u0627\u0645\u067e\u0627\u06cc\u0644 \u0645\u06cc \u06a9\u0646\u062f. <\/p>\n<p>\u0627\u0645\u0627 \u0686\u0631\u0627 \u0628\u0627\u06cc\u062f 3 \u0628\u0627\u0631 \u0622\u0646 \u0631\u0627 \u0628\u0646\u0648\u06cc\u0633\u0645 \u061f\u061f\u061f<\/p>\n<p>\u0634\u0645\u0627 \u0646\u0645\u06cc \u06a9\u0646\u06cc\u062f !!! <\/p>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0627\u0632 \u0627\u0644\u06af\u0648\u0647\u0627\u06cc \u0628\u0631\u0627\u06cc \u0633\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u062f\u0631 \u06cc\u06a9 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>#include <iostream>\n\ntemplate <typename t=\"\">\nvoid function(T v){\n        std::cout &lt;&lt; \"function: \" &lt;&lt; v &lt;&lt; std::endl;\n}\n\nint main(int argc, char** argv){\n        function(\"hi\");\n        function(2);\n}\n<\/typename><\/iostream><\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u062e\u0648\u0628 \u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0645\u0627 \u0628\u0631\u0646\u0627\u0645\u0647 \u0627\u06cc \u062f\u0627\u0631\u06cc\u0645 \u06a9\u0647 \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u06a9\u0627\u0645\u067e\u0627\u06cc\u0644 \u0645\u06cc \u06a9\u0646\u062f. <\/p>\n<p>\u06a9\u0627\u0645\u067e\u0627\u06cc\u0644\u0631 \u0645\u06cc \u0628\u06cc\u0646\u062f \u06a9\u0647 \u0645\u0627 \u0628\u0631\u0627\u06cc &#8220;\u0633\u0644\u0627\u0645&#8221; \u0648 <code>2<\/code>\u0628\u0634\u0631 <\/p>\n<p>\u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0647\u0646\u06af\u0627\u0645 \u062a\u0647\u06cc\u0647 \u060c \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u062f\u0648 \u062a\u063a\u06cc\u06cc\u0631 \u0639\u0645\u0644\u06a9\u0631\u062f \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f. \u06cc\u06a9\u06cc \u0639\u062f\u062f \u0635\u062d\u06cc\u062d \u0631\u0627 \u0645\u06cc \u067e\u0630\u06cc\u0631\u062f \u0648 \u062f\u06cc\u06af\u0631\u06cc \u0631\u0634\u062a\u0647 \u0631\u0627 \u0645\u06cc \u067e\u0630\u06cc\u0631\u062f. <\/p>\n<p>\u0627\u06af\u0631 \u06cc\u06a9 \u0646\u0648\u0639 \u0633\u0648\u0645 \u0631\u0627 \u0645\u0639\u0631\u0641\u06cc \u06a9\u0631\u062f\u0645 \u060c \u0628\u06cc\u0627\u06cc\u06cc\u062f \u06cc\u06a9 \u062f\u0648\u0628\u0644 \u0628\u06af\u0648\u06cc\u06cc\u0645 \u060c \u0633\u067e\u0633 \u06cc\u06a9 \u0646\u0633\u062e\u0647 \u062f\u0648\u062a\u0627\u06cc\u06cc \u0627\u0632 \u0639\u0645\u0644\u06a9\u0631\u062f \u0631\u0627 \u06a9\u0627\u0645\u067e\u0627\u06cc\u0644 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n<p>\u0641\u0648\u0642 \u0627\u0644\u0639\u0627\u062f\u0647 \u0628\u0627\u062d\u0627\u0644! <\/p>\n<p>\u0645\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u0645 \u0686\u0646\u062f\u06cc\u0646 \u0646\u0633\u062e\u0647 \u0627\u0632 \u0639\u0645\u0644\u06a9\u0631\u062f \u062e\u0648\u062f \u0631\u0627 \u0628\u0627 \u06a9\u062f \u06a9\u0645\u062a\u0631\u06cc \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0642\u0627\u0644\u0628 \u0647\u0627 \u0628\u0646\u0648\u06cc\u0633\u0645.<\/p>\n<p>\u0645\u0646 \u0645\u06cc \u062e\u0648\u0627\u0647\u0645 \u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u0645 \u06a9\u0647 \u06cc\u06a9 \u0631\u0627\u0647 \u062f\u06cc\u06af\u0631 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u06cc\u062f. \u062f\u0631 C ++ 17 \u0648 \u0628\u0639\u062f \u0627\u0632 \u0622\u0646 \u060c \u0627\u0646\u0648\u0627\u0639 \u067e\u0627\u06a9 \u06a9\u0631\u062f\u0646 \u0646\u0648\u0639 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f. (<code>std::variant<\/code> \u0648\u062a <code>std::any<\/code>)<\/p>\n<p>\u0627\u06cc\u0646 \u0646\u0648\u0639 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0646\u06af\u0647 \u062f\u0627\u0634\u062a\u0647 \u0634\u0648\u062f <em>\u0686\u0646\u062f\u06af\u0627\u0646\u0647<\/em> \u0627\u0646\u0648\u0627\u0639 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0628\u0647 \u0637\u0648\u0631 \u0647\u0645\u0632\u0645\u0627\u0646. \u0627\u0646\u0648\u0627\u0639 \u0622\u0646\u0647\u0627 \u062f\u0631 \u0632\u0645\u0627\u0646 \u0627\u062c\u0631\u0627 \u0628\u0631 \u062e\u0644\u0627\u0641 \u0632\u0645\u0627\u0646 \u06a9\u0627\u0645\u067e\u0627\u06cc\u0644 \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc \u0634\u0648\u0646\u062f.<\/p>\n<p>\u062f\u0627\u0633\u062a\u0627\u0646 \u06a9\u0648\u062a\u0627\u0647 \u060c \u0634\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u06cc\u062f:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>#include <iostream>\n#include <variant>\n\nvoid function(std::variant<int std::string=\"\"> v){\n        if(std::holds_alternative<int>(v)){\n                std::cout &lt;&lt; \"function: \" &lt;&lt; std::get<int>(v) &lt;&lt; std::endl;\n        }else{\n                std::cout &lt;&lt; \"function: \" &lt;&lt; std::get<:string>(v) &lt;&lt; std::endl;\n        }\n}\n\nint main(int argc, char** argv){\n        function(\"hi\");\n        function(2);\n}\n<\/:string><\/int><\/int><\/int><\/variant><\/iostream><\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0628\u0647 \u0646\u0638\u0631 \u0645\u0646 \u060c \u0627\u06cc\u0646 \u0628\u0647 \u0646\u0638\u0631 \u0632\u0634\u062a\/\u06a9\u0644\u0627\u0645\u06cc \u0645\u06cc \u0631\u0633\u062f. \u0647\u0645\u0686\u0646\u06cc\u0646 \u06cc\u06a9 \u0628\u06cc\u0627\u0646\u06cc\u0647 \u0627\u0636\u0627\u0641\u06cc \u062f\u0631 \u0622\u0646\u062c\u0627 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f. <\/p>\n<p>\u062f\u0631 \u0646\u062a\u06cc\u062c\u0647 \u060c \u0645\u0646 \u0627\u0632 \u06cc\u06a9 \u0627\u0644\u06af\u0648\u06cc \u0628\u0631\u0627\u06cc \u0627\u06cc\u0646 \u0645\u0648\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u0645. <\/p>\n<p>\u0646\u06a9\u062a\u0647 \u062e\u0648\u0628 \u062f\u0631 \u0645\u0648\u0631\u062f \u06cc\u06a9 \u0646\u0648\u0639 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0631\u062e\u0644\u0627\u0641 \u06cc\u06a9 \u0627\u0644\u06af\u0648\u06cc \u06a9\u0644\u06cc \u060c \u0627\u0646\u0648\u0627\u0639 \u0645\u062c\u0627\u0632 \u0631\u0627 \u062f\u0631 \u0639\u0645\u0644\u06a9\u0631\u062f \u0645\u062d\u062f\u0648\u062f \u06a9\u0646\u062f.<\/p>\n<p>\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u0641\u0642\u0637 \u062f\u0631 \u06cc\u06a9 \u0639\u062f\u062f \u0635\u062d\u06cc\u062d \u0648 \u0631\u0634\u062a\u0647 \u0627\u06cc \u0628\u0647 \u062f\u0627\u062e\u0644 \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc \u062f\u0647\u062f <code>function<\/code>\u0628\u0634\u0631<\/p>\n<p>\u062e\u0648\u0628 \u060c \u0639\u0627\u0644\u06cc! \u0622\u06cc\u0627 \u0631\u0627\u0647\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u0628\u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u0628\u0627 \u0642\u0627\u0644\u0628 \u0647\u0627 \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u06cc\u0645\u061f<\/p>\n<p>\u062c\u0648\u0627\u0628 \u0628\u0644\u0647 \u0627\u0633\u062a! <\/p>\n<p>\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0628\u0647 \u0632\u0648\u062f\u06cc \u0628\u0647 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0627\u0646\u062c\u0627\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0646\u06af\u0627\u0647 \u06a9\u0646\u06cc\u0645.<\/p>\n<p>\u062f\u0631\u0633\u062a \u0642\u0628\u0644 \u0627\u0632 \u0631\u0633\u06cc\u062f\u0646 \u0628\u0647 \u0622\u0646\u062c\u0627 \u060c \u0645\u06cc \u062e\u0648\u0627\u0647\u0645 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u062f\u06cc\u06af\u0631\u06cc \u0627\u0632 \u0627\u0644\u06af\u0648\u0647\u0627 \u0631\u0627 \u0628\u0647 \u0634\u0645\u0627 \u0646\u0634\u0627\u0646 \u062f\u0647\u0645.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"std_enable_if\"><\/span>\n<p>  <code>std::enable_if<\/code><br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C ++ \u062f\u0627\u0631\u062f <code>std::enable_if<\/code> \u0628\u0631\u0627\u06cc \u0641\u0639\u0627\u0644 \u06a9\u0631\u062f\u0646 \u062a\u0648\u0627\u0628\u0639 \u062e\u0627\u0635 \u062f\u0631 \u0635\u0648\u0631\u062a \u0635\u062d\u062a \u06cc\u06a9 \u0634\u0631\u0637.<\/p>\n<p><code>std::enable_if<\/code>  \u0627\u063a\u0644\u0628 \u0628\u0627 \u0642\u0627\u0644\u0628 \u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. <\/p>\n<p><code>std::enable_if<\/code>  \u0647\u0645\u0686\u0646\u06cc\u0646 \u06cc\u06a9 \u0646\u0648\u0639 \u0642\u0627\u0644\u0628 \u0628\u0646\u062f\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a. \u0622\u0631\u06af\u0648\u0645\u0627\u0646 \u0627\u0644\u06af\u0648\u06cc \u0627\u0648\u0644 \u0634\u0631\u0637 \u0648 \u062f\u0648\u0645 \u0646\u0648\u0639 \u0627\u0633\u062a \u06a9\u0647 \u062f\u0631 \u0635\u0648\u0631\u062a \u0635\u062d\u062a \u0634\u0631\u0637 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<p>\u062f\u0631 C ++ \u060c \u0627\u06cc\u0646 \u0645\u0641\u0647\u0648\u0645\u06cc \u0631\u0627 \u0628\u0647 \u0646\u0627\u0645 \u0645\u0639\u0631\u0641\u06cc \u0645\u06cc \u06a9\u0646\u062f <em>\u0633\u0648\u062a\u06cc\u0646<\/em> (\u062e\u0631\u0627\u0628\u06cc \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646\u06cc \u062e\u0637\u0627\u06cc\u06cc \u0646\u06cc\u0633\u062a).<\/p>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0646\u0645\u0648\u0646\u0647 \u0627\u06cc \u0627\u0632 \u0627\u06cc\u0646 \u0631\u0627 \u0628\u0628\u06cc\u0646\u06cc\u0645:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>#include <iostream>\n#include <type_traits>\n\ntemplate <typename t=\"\">\ntypename std::enable_if<:is_same int=\"\">::value ||\nstd::is_constructible<:string t=\"\">::value, void&gt;::type\nfunction(T v){\n        std::cout &lt;&lt; \"function: \" &lt;&lt; v &lt;&lt; std::endl;\n}\n\ntemplate <typename t=\"\">\ntypename std::enable_if::value ||\nstd::is_constructible<:string t=\"\">::value), void&gt;::type\nfunction(T v){\n        std::cout &lt;&lt; \"diff function: \" &lt;&lt; v &lt;&lt; std::endl;\n}\n\nint main(int argc, char** argv){\n        function(\"hi\");\n        function(2);\n        function(true);\n}\n<\/:string><\/typename><\/:string><\/:is_same><\/typename><\/type_traits><\/iostream><\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u062e\u0631\u0648\u062c\u06cc \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>function: hi\nfunction: 2\ndiff function: true\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0647\u0631 \u062f\u0648 <code>std::enable_if<\/code>s \u0628\u0631\u0627\u06cc \u0633\u0627\u062e\u062a <code>void<\/code> \u0627\u06af\u0631 \u0634\u0631\u0627\u06cc\u0637 \u0622\u0646\u0647\u0627 \u0628\u0631\u0627\u06cc \u0646\u0648\u0639 \u0642\u0627\u0644\u0628 \u0628\u0646\u062f\u06cc \u0635\u062d\u06cc\u062d \u0628\u0627\u0634\u062f \u060c \u0646\u0648\u0639 \u0628\u0627\u0632\u06af\u0634\u062a \u0631\u0627 \u0628\u0631\u06af\u0631\u062f\u0627\u0646\u06cc\u062f. <\/p>\n<p>\u0645\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645 <code>type_traits<\/code> \u062f\u0631 C ++ \u0628\u0631\u0627\u06cc \u0633\u0627\u062e\u062a\u0646 \u0648\u0636\u0639\u06cc\u062a \u0645\u0627. (<code>std::is_same<\/code> \u0648\u062a <code>std::is_constructible<\/code>)<\/p>\n<p>\u0627\u06af\u0631 <code>T<\/code> int \u0627\u0633\u062a \u06cc\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0647 \u06cc\u06a9 \u0631\u0634\u062a\u0647 \u0633\u0627\u062e\u062a\u0647 \u0634\u0648\u062f \u060c \u0627\u0648\u0644\u06cc\u0646 \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0647 \u0646\u0648\u0639 \u0628\u0627\u0632\u06af\u0634\u062a \u0628\u0627\u0637\u0644 \u062f\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<p>\u0628\u0627 \u0627\u06cc\u0646 \u062d\u0627\u0644 \u060c \u0639\u0645\u0644\u06a9\u0631\u062f \u062f\u0648\u0645 \u062f\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f <em>\u0646\u0627\u0645\u0639\u062a\u0628\u0631<\/em> \u0646\u0648\u0639 \u0628\u0627\u0632\u06af\u0634\u062a \u062f\u0631 \u0646\u062a\u06cc\u062c\u0647 \u060c \u0639\u0645\u0644\u06a9\u0631\u062f \u062a\u0648\u0633\u0637 \u06a9\u0627\u0645\u067e\u0627\u06cc\u0644\u0631 \u062f\u0648\u0631 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<p>\u0627\u0632 \u0627\u06cc\u0646 \u0631\u0648 \u060c \u0628\u0627 <code>std::enable_if<\/code> \u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0686\u0646\u062f\u06cc\u0646 \u06a9\u0627\u0631\u06a9\u0631\u062f \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u0645 \u0628\u0647 \u06af\u0648\u0646\u0647 \u0627\u06cc \u06a9\u0647 \u0627\u06af\u0631 \u062a\u0639\u0648\u06cc\u0636 \u0646\u0648\u0639 \u0628\u0627 \u06cc\u06a9 \u0639\u0645\u0644\u06a9\u0631\u062f \u0634\u06a9\u0633\u062a \u0628\u062e\u0648\u0631\u062f \u060c \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0639\u0645\u0644\u06a9\u0631\u062f \u062f\u06cc\u06af\u0631\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f \u06a9\u0647 \u0642\u0627\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0628\u0627\u0634\u062f.<\/p>\n<p>\u0646\u0647 \u062a\u0646\u0647\u0627 \u0627\u06cc\u0646 \u060c \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 <code>std::enable_if<\/code> \u0634\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0628\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f\u0647\u0627\u06cc \u062a\u062e\u0635\u0635\u06cc \u062c\u0632\u0626\u06cc \u0627\u062c\u0627\u0632\u0647 \u062f\u0647\u06cc\u062f. \u0645\u0627\u0646\u0646\u062f (<code>T<\/code> \u0648\u062a <code>std::vector<t\/><\/code>) \u0647\u0645\u0632\u06cc\u0633\u062a\u06cc.<\/p>\n<p>\u0631\u0648\u0646\u0642 Sfinae \u062d\u0644 \u0634\u062f.<\/p>\n<p>\u062e\u0648\u0628 \u060c \u0628\u0627\u062d\u0627\u0644 \u060c \u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u0646\u0648\u0627\u0639 \u0631\u0627 \u0645\u062d\u062f\u0648\u062f \u06a9\u0646\u06cc\u0645 <code>std::enable_if<\/code>\u0628\u0634\u0631 <\/p>\n<p>\u0627\u0645\u0627 \u062d\u062a\u06cc \u0627\u06cc\u0646 \u0632\u0634\u062a \u0628\u0647 \u0646\u0638\u0631 \u0645\u06cc \u0631\u0633\u062f. \u0627\u06af\u0631 \u0634\u0631\u0627\u06cc\u0637 \u0637\u0648\u0644\u0627\u0646\u06cc \u0628\u0647 \u0646\u0638\u0631 \u0628\u0631\u0633\u062f \u060c \u0645\u0627 \u0631\u0627 \u0641\u0639\u0627\u0644 \u0645\u06cc \u06a9\u0646\u06cc\u0645.<\/p>\n<p>\u0622\u06cc\u0627 \u0631\u0627\u0647 \u0628\u0647\u062a\u0631\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u0628\u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u06cc\u0646 \u0645\u0633\u0626\u0644\u0647 \u0631\u0627 \u0628\u0631\u0637\u0631\u0641 \u06a9\u0646\u06cc\u0645\u061f<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%D9%85%D9%81%D8%A7%D9%87%DB%8C%D9%85\"><\/span>\n<p>  \u0645\u0641\u0627\u0647\u06cc\u0645<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u062f\u0631 C ++ 20 \u060c \u0645\u0641\u0627\u0647\u06cc\u0645 \u0645\u0639\u0631\u0641\u06cc \u0634\u062f\u0646\u062f. <\/p>\n<p>\u0645\u0641\u0627\u0647\u06cc\u0645 \u0628\u0633\u06cc\u0627\u0631 \u062c\u0627\u0644\u0628 \u0647\u0633\u062a\u0646\u062f.<\/p>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0645\u0634\u06a9\u0644\u06cc \u0631\u0627 \u06a9\u0647 \u0642\u0628\u0644\u0627\u064b \u0628\u0627 \u0645\u0641\u0627\u0647\u06cc\u0645 \u062f\u0627\u0634\u062a\u06cc\u0645 \u062d\u0644 \u06a9\u0646\u06cc\u0645. \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0645\u062e\u062a\u0635\u0631 \u062a\u0631 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>#include <iostream>\n#include <type_traits>\n#include <concepts>\n\ntemplate <typename t=\"\">\nconcept ValidType = std::same_as<t int=\"\"> || std::is_constructible_v<:string t=\"\">;\n\ntemplate <validtype t=\"\">\nvoid function(T v){\n        std::cout &lt;&lt; \"function: \" &lt;&lt; v &lt;&lt; std::endl;\n}\n\ntemplate <typename t=\"\">\nvoid function(T v){\n        std::cout &lt;&lt; \"diff function: \" &lt;&lt; v &lt;&lt; std::endl;\n}\n\nint main(int argc, char** argv){\n        function(\"hi\");\n        function(2);\n        function(true);\n}\n<\/typename><\/validtype><\/:string><\/t><\/typename><\/concepts><\/type_traits><\/iostream><\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0627\u06cc\u0646 \u0646\u0648\u0639\u06cc \u062e\u0646\u06a9 \u062a\u0631 \u0648 \u062a\u0645\u06cc\u0632\u062a\u0631 \u0627\u0633\u062a. \u0646\u0628\u0627\u06cc\u062f <code>2<\/code> \u0628\u0631\u0627\u06cc \u0647\u0631 \u062f\u0648 \u06a9\u0627\u0631\u06a9\u0631\u062f \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u06cc\u062f\u061f<\/p>\n<p>\u0645\u0641\u0627\u0647\u06cc\u0645 \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u062e\u0637\u0627\u06cc\u06cc \u0627\u06cc\u062c\u0627\u062f \u0646\u0645\u06cc \u06a9\u0646\u0646\u062f.<\/p>\n<p>\u062f\u0631 \u0639\u0648\u0636 \u060c \u06a9\u0627\u0645\u067e\u0627\u06cc\u0644\u0631 \u0645\u062d\u062f\u0648\u062f\u062a\u0631\u06cc\u0646 \u06af\u0632\u06cc\u0646\u0647 \u0631\u0627 \u0627\u0646\u062a\u062e\u0627\u0628 \u0645\u06cc \u06a9\u0646\u062f \u060c \u06a9\u0647 \u0627\u0648\u0644\u06cc\u0646 \u0639\u0645\u0644\u06a9\u0631\u062f \u0627\u0633\u062a.<\/p>\n<p>\u0634\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0686\u0646\u062f\u06cc\u0646 \u0645\u0641\u0647\u0648\u0645 \u0631\u0627 \u0628\u0627 \u0647\u0645 \u0632\u0646\u062c\u06cc\u0631 \u06a9\u0646\u06cc\u062f <code>Concept1 || Concept2<\/code> \u06cc\u0627 <code>Concept1 &amp;&amp; Concept2<\/code>\u0628\u0634\u0631<\/p>\n<p>\u0634\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0628\u0627 \u0645\u0641\u0627\u0647\u06cc\u0645 \u062f\u06cc\u06af\u0631 \u0645\u0641\u0627\u0647\u06cc\u0645 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>template<typename t=\"\">\nconcept IsInt = std::same_as<t int=\"\">;\n\ntemplate<typename t=\"\">\nconcept IsString = std::is_constructible_v<:string t=\"\">;\n\ntemplate <typename t=\"\">\nconcept ValidType = IsInt<t> || IsString<t>;\n<\/t><\/t><\/typename><\/:string><\/typename><\/t><\/typename><\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0648 \u0647\u0645\u0647 \u0627\u06cc\u0646\u0647\u0627 \u062f\u0631 \u0632\u0645\u0627\u0646 \u06a9\u0627\u0645\u067e\u0627\u06cc\u0644 \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc \u0634\u0648\u062f!<\/p>\n<p>\u0627\u06cc\u0646 \u0634\u06a9\u0644 \u0645\u062f\u0631\u0646 \u0645\u0641\u0647\u0648\u0645 C ++ Sfinae \u0627\u0633\u062a.<\/p>\n<p>\u0645\u0641\u0627\u0647\u06cc\u0645 \u062f\u0633\u062a \u0628\u0647 \u062f\u0633\u062a \u0647\u0645 \u0645\u06cc \u062f\u0647\u0646\u062f <code>requires<\/code> \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc <\/p>\n<p>\u0645\u0646 \u0646\u0645\u06cc \u062e\u0648\u0627\u0647\u0645 \u0627\u06cc\u0646 \u0648\u0628\u0644\u0627\u06af \u0631\u0627 \u062e\u06cc\u0644\u06cc \u0637\u0648\u0644\u0627\u0646\u06cc \u0628\u0633\u0627\u0632\u0645 \u060c \u0627\u0645\u0627 \u0627\u06af\u0631 \u062f\u0648\u0633\u062a \u062f\u0627\u0631\u06cc\u062f \u062a\u0648\u0636\u06cc\u062d \u062f\u0647\u0645 <code>requires<\/code> \u0628\u0627 \u062c\u0632\u0626\u06cc\u0627\u062a \u0628\u06cc\u0634\u062a\u0631 \u060c \u0646\u0638\u0631 \u062e\u0648\u062f \u0631\u0627 \u0631\u0647\u0627 \u06a9\u0646\u06cc\u062f! \u06cc\u0627 \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0628\u06cc\u0634\u062a\u0631 \u0628\u062e\u0648\u0627\u0646\u06cc\u062f.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%D9%86%D8%AA%DB%8C%D8%AC%D9%87_%DA%AF%DB%8C%D8%B1%DB%8C\"><\/span>\n<p>  \u0646\u062a\u06cc\u062c\u0647 \u06af\u06cc\u0631\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>\u0645\u0641\u0627\u0647\u06cc\u0645 \u062e\u0646\u06a9 \u0648 \u062a\u0645\u06cc\u0632 \u0648 \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u0647\u0633\u062a\u0646\u062f<\/li>\n<li>\n<code>std::enable_if<\/code>  noice \u0627\u0633\u062a \u0627\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0633\u06cc\u0627\u0631 \u06a9\u0644\u0627\u0645\u06cc \u0634\u0648\u062f<\/li>\n<li>\n<code>std::variant<\/code>  \u0627\u06af\u0631 \u06af\u0641\u062a\u0647 \u0647\u0627 \u0648 \u062f\u0631 \u062d\u0627\u0644 \u0627\u062c\u0631\u0627 \u062f\u0631 \u0632\u0645\u0627\u0646 \u0627\u062c\u0631\u0627 \u0628\u0627\u0634\u062f \u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0627 \u0646\u0648\u0639 \u0645\u0628\u062a\u0646\u06cc \u0628\u0631 \u06a9\u062b\u06cc\u0641 \u0634\u0648\u062f<\/li>\n<li>\u0627\u0644\u06af\u0648\u0647\u0627\u06cc \u0639\u0645\u0648\u0645\u06cc \u0639\u0627\u0644\u06cc \u0647\u0633\u062a\u0646\u062f! \u0627\u0645\u0627 \u0622\u0646\u0647\u0627 \u0646\u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u062a\u062e\u0635\u0635 \u062c\u0632\u0626\u06cc \u06cc\u0627 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u0646\u0648\u0639 \u0631\u0627 \u062a\u062d\u0645\u0644 \u06a9\u0646\u0646\u062f.<\/li>\n<\/ol>\n<p>\u0633\u0639\u06cc \u06a9\u0646\u06cc\u062f \u0627\u0632 \u0645\u0641\u0627\u0647\u06cc\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f. \u0622\u0646\u0647\u0627 \u0622\u0633\u0627\u0646 \u0647\u0633\u062a\u0646\u062f \u0648 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u0646\u062f \u0628\u0631\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 C ++ \u0645\u062f\u0631\u0646 \u0627\u062d\u0633\u0627\u0633 \u062e\u0648\u0628\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f.<\/p>\n<p>\u0635\u0644\u062d<br \/>-\u0628\u0627\u0633\u062a\u0631\u062f\u0631\u0633\u062a\u0631<\/p>\n<p><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>C ++ 20 \u0645\u0639\u0631\u0641\u06cc \u0634\u062f \u0645\u0641\u0627\u0647\u06cc\u0645\u0628\u0634\u0631 \u0622\u0646\u0647\u0627 \u0686\u0647 \u0647\u0633\u062a\u0646\u062f\u061f \u0686\u0631\u0627 \u0628\u0627\u06cc\u062f \u0628\u0647 \u0622\u0646\u0647\u0627 \u0627\u0647\u0645\u06cc\u062a \u062f\u0647\u0645\u061f \u0686\u06af\u0648\u0646\u0647 \u0627\u0632 \u0622\u0646\u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u0645\u061f \u0645\u0641\u0627\u0647\u06cc\u0645 \u0627\u0628\u0632\u0627\u0631\u06cc \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u0628\u0631\u0627\u06cc \u06a9\u0645\u06a9 \u0628\u0647 \u0634\u0645\u0627 \u062f\u0631 \u0646\u0648\u0634\u062a\u0646 \u06a9\u062f \u0639\u0645\u0648\u0645\u06cc \u0628\u0627 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u0647\u0627\u06cc \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0634\u062f\u0647 \u062f\u0631 \u0632\u0645\u0627\u0646 \u06a9\u0627\u0645\u067e\u0627\u06cc\u0644 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0628\u0647 \u0686\u0647 \u0645\u0639\u0646\u06cc \u0627\u0633\u062a\u061f \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u06af\u0648\u06cc\u06cc\u0645 \u06a9\u0647 \u0645\u0646 \u06cc\u06a9 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u062f\u0631\u0633\u062a \u0645\u06cc \u06a9\u0646\u0645 \u0648 &hellip;<\/p>\n","protected":false},"author":2,"featured_media":105092,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-105091","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/105091","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/comments?post=105091"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/105091\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/105092"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=105091"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=105091"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=105091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}