{"id":68686,"date":"2025-05-21T09:21:07","date_gmt":"2025-05-21T01:21:07","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=68686"},"modified":"2025-05-21T09:21:07","modified_gmt":"2025-05-21T01:21:07","slug":"%e6%8e%a2%e7%b4%a2-c23-%e4%b8%ad%e7%9a%84-viewszip-%e4%b8%8e-viewszip_transform%ef%bc%9a%e6%8f%90%e5%8d%87%e5%b9%b6%e8%a1%8c%e5%a4%84%e7%90%86%e6%95%88%e7%8e%87%e7%9a%84%e5%88%a9%e5%99%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/68686\/","title":{"rendered":"\u63a2\u7d22 C++23 \u4e2d\u7684 views::zip \u4e0e views::zip_transform\uff1a\u63d0\u5347\u5e76\u884c\u5904\u7406\u6548\u7387\u7684\u5229\u5668"},"content":{"rendered":"<h2>\u5f15\u8a00<\/h2>\n<p>\u968f\u7740 C++ \u6807\u51c6\u4e0d\u65ad\u6f14\u8fdb\uff0cC++23 \u4e3a\u5f00\u53d1\u8005\u5e26\u6765\u4e86\u66f4\u591a\u9ad8\u6548\u4e14\u5b9e\u7528\u7684\u65b0\u7279\u6027\u3002\u5176\u4e2d\uff0c<code>views::zip<\/code> \u4e0e <code>views::zip_transform<\/code> \u662f\u4e24\u4e2a\u5f15\u4eba\u6ce8\u76ee\u7684\u8303\u56f4\u89c6\u56fe\uff08views\uff09\u9002\u914d\u5668\uff0c\u5b83\u4eec\u7684\u5f15\u5165\u4e3a\u591a\u5e8f\u5217\u5e76\u884c\u5904\u7406\u63d0\u4f9b\u4e86\u66f4\u52a0\u7075\u6d3b\u3001\u53ef\u7ec4\u5408\u7684\u89e3\u51b3\u65b9\u6848\u3002\u5bf9\u4e8e\u9700\u8981\u9ad8\u6027\u80fd\u8ba1\u7b97\u8d44\u6e90\u7684\u573a\u666f\u800c\u8a00\uff0c\u9009\u7528\u9ad8\u7a33\u5b9a\u6027\u4e0e\u8ba1\u7b97\u80fd\u529b\u517c\u5907\u7684<strong>\u7f8e\u56fd\u670d\u52a1\u5668<\/strong>\uff0c\u65e0\u7591\u80fd\u591f\u66f4\u597d\u5730\u53d1\u6325\u8fd9\u4e9b\u8bed\u8a00\u7279\u6027\u7684\u4f18\u52bf\u3002<\/p>\n<p>\u672c\u6587\u5c06\u6df1\u5165\u4ecb\u7ecd\u8fd9\u4e24\u4e2a\u65b0\u5de5\u5177\u7684\u529f\u80fd\u3001\u5e94\u7528\u573a\u666f\u4e0e\u4ee3\u7801\u5b9e\u73b0\uff0c\u52a9\u529b\u6280\u672f\u4eba\u5458\u66f4\u597d\u5730\u638c\u63e1 C++23 \u7684\u73b0\u4ee3\u7f16\u7a0b\u8303\u5f0f\u3002<\/p>\n<h2>C++23 \u4e0e Ranges \u5e93\u6982\u8ff0<\/h2>\n<h3>C++23 \u7684\u8fdb\u5316\u4eae\u70b9<\/h3>\n<p>\u76f8\u8f83\u4e8e C++20\uff0cC++23 \u66f4\u50cf\u662f\u4e00\u6b21\u6e10\u8fdb\u5f0f\u589e\u5f3a\uff0c\u5728\u4fdd\u7559\u5df2\u6709\u8303\u5f0f\u7684\u57fa\u7840\u4e0a\uff0c\u52a0\u5165\u4e86\u8bb8\u591a\u63d0\u5347\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u5f00\u53d1\u6548\u7387\u7684\u5b9e\u7528\u5de5\u5177\u3002\u5176\u4e2d\u6700\u91cd\u8981\u7684\u66f4\u65b0\u4e4b\u4e00\u5c31\u662f\u7ee7\u7eed\u5b8c\u5584 Ranges \u5e93\uff0c\u4e3a\u73b0\u4ee3 C++ \u63d0\u4f9b\u66f4\u5f3a\u7684\u8868\u8fbe\u80fd\u529b\u3002<\/p>\n<h3>\u518d\u8ba4\u8bc6 Ranges \u4e0e views<\/h3>\n<p>\u5728 C++20 \u4e2d\uff0cRanges \u5e93\u7684\u5f15\u5165\u5f7b\u5e95\u6539\u53d8\u4e86\u5bf9\u5e8f\u5217\u6570\u636e\u7684\u5904\u7406\u65b9\u5f0f\u3002\u901a\u8fc7 <code>std::views<\/code> \u63d0\u4f9b\u7684\u4e00\u7cfb\u5217\u51fd\u6570\u5f0f\u64cd\u4f5c\u63a5\u53e3\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u50cf\u5904\u7406\u6d41\u4e00\u6837\u5bf9\u6570\u636e\u5e8f\u5217\u8fdb\u884c\u8fc7\u6ee4\u3001\u6620\u5c04\u3001\u5206\u7247\u7b49\u64cd\u4f5c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\r\n#include &lt;vector&gt;\r\n#include &lt;ranges&gt;\r\n\r\nint main() {\r\n    std::vector&lt;int&gt; nums = {1, 2, 3, 4, 5, 6};\r\n    auto filtered = nums \r\n                  | std::views::filter([](int x) { return x % 2 == 0; }) \r\n                  | std::views::transform([](int x) { return x * 2; });\r\n    \r\n    for (int n : filtered)\r\n        std::cout &lt;&lt; n &lt;&lt; ' ';\r\n}\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u6e05\u6670\u5730\u5c55\u793a\u4e86\u8fc7\u6ee4\u5076\u6570\u5e76\u5c06\u5176\u52a0\u500d\u7684\u8fc7\u7a0b\uff0c\u4f53\u73b0\u4e86 Ranges \u7684\u9ad8\u53ef\u8bfb\u6027\u3002<\/p>\n<h2>\u6df1\u5165\u89e3\u6790 views::zip<\/h2>\n<h3>\u529f\u80fd\u4ecb\u7ecd<\/h3>\n<p><code>std::views::zip<\/code> \u662f C++23 \u65b0\u589e\u7684\u89c6\u56fe\u9002\u914d\u5668\uff0c\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u5c06\u591a\u4e2a\u8303\u56f4\u4e2d\u7684\u5bf9\u5e94\u5143\u7d20\u7ec4\u5408\u4e3a\u5143\u7ec4\u3002\u5176\u957f\u5ea6\u7531\u6700\u77ed\u7684\u53c2\u4e0e\u8303\u56f4\u51b3\u5b9a\uff0c\u786e\u4fdd\u8bbf\u95ee\u5b89\u5168\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5c06\u591a\u4e2a\u5bb9\u5668\u201c\u5e76\u884c\u5408\u5e76\u201d\u540e\u8fdb\u884c\u7edf\u4e00\u904d\u5386\u3002<\/p>\n<h3>\u5e94\u7528\u573a\u666f<\/h3>\n<p>\u5728\u591a\u6570\u636e\u6e90\u5904\u7406\u3001\u53c2\u6570\u914d\u5bf9\u8fd0\u7b97\u6216\u7ed3\u6784\u5316\u6253\u5370\u8f93\u51fa\u7b49\u5e76\u884c\u9700\u6c42\u573a\u666f\u4e2d\uff0c<code>views::zip<\/code> \u53ef\u6781\u5927\u63d0\u5347\u5904\u7406\u6548\u7387\uff0c\u5e76\u51cf\u5c11\u5197\u4f59\u4ee3\u7801\u903b\u8f91\u3002<\/p>\n<h3>\u793a\u4f8b\u4ee3\u7801<\/h3>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\r\n#include &lt;vector&gt;\r\n#include &lt;list&gt;\r\n#include &lt;array&gt;\r\n#include &lt;ranges&gt;\r\n#include &lt;tuple&gt;\r\n\r\nint main() {\r\n    std::vector&lt;int&gt; a = {1, 2, 3};\r\n    std::list&lt;std::string&gt; b = {\"One\", \"Two\", \"Three\"};\r\n    std::array&lt;char, 3&gt; c = {'A', 'B', 'C'};\r\n\r\n    for (auto [i, str, ch] : std::views::zip(a, b, c)) {\r\n        std::cout &lt;&lt; i &lt;&lt; \", \" &lt;&lt; str &lt;&lt; \", \" &lt;&lt; ch &lt;&lt; '\\n';\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u8be5\u793a\u4f8b\u5c55\u793a\u4e86\u4e09\u79cd\u5bb9\u5668\u5143\u7d20\u7684\u9010\u4e00\u5e76\u884c\u8f93\u51fa\uff0c\u6709\u6548\u63d0\u5347\u6570\u636e\u5904\u7406\u4e00\u81f4\u6027\u3002\u4e3a\u4e86\u652f\u6301\u8fd9\u7c7b\u9ad8\u6548\u6570\u636e\u5904\u7406\u4efb\u52a1\uff0c\u5f3a\u70c8\u5efa\u8bae\u9009\u62e9\u4e00\u6b3e\u7a33\u5b9a\u3001\u5e26\u5bbd\u5145\u8db3\u7684<strong>\u7f8e\u56fd\u4e91\u670d\u52a1\u5668<\/strong>\u4f5c\u4e3a\u540e\u7aef\u652f\u6491\uff0c\u786e\u4fdd\u7a0b\u5e8f\u5728\u8d1f\u8f7d\u9ad8\u65f6\u4f9d\u65e7\u8fd0\u884c\u6d41\u7545\u3002<\/p>\n<h2>\u89e3\u9501 views::zip_transform \u7684\u53d8\u6362\u80fd\u529b<\/h2>\n<h3>\u6838\u5fc3\u7279\u6027<\/h3>\n<p><code>std::views::zip_transform<\/code> \u4e0d\u4ec5\u80fd\u7ec4\u5408\u591a\u4e2a\u8303\u56f4\uff0c\u8fd8\u80fd\u63a5\u53d7\u4e00\u4e2a\u51fd\u6570\u5bf9\u8c61\u5bf9\u7ec4\u5408\u7ed3\u679c\u8fdb\u884c\u52a0\u5de5\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u5c06\u201c\u7ec4\u5408\u201d\u4e0e\u201c\u5904\u7406\u201d\u6574\u5408\u4e3a\u4e00\u4e2a\u8fc7\u7a0b\uff0c\u5927\u5e45\u7b80\u5316\u4e1a\u52a1\u903b\u8f91\u7f16\u5199\u3002<\/p>\n<h3>\u5b9e\u7528\u6848\u4f8b<\/h3>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\r\n#include &lt;vector&gt;\r\n#include &lt;ranges&gt;\r\n\r\nint main() {\r\n    std::vector&lt;int&gt; a = {1, 2, 3, 4};\r\n    std::vector&lt;int&gt; b = {5, 6, 7, 8};\r\n\r\n    auto sum = std::views::zip_transform([](int x, int y) { return x + y; }, a, b);\r\n\r\n    for (int val : sum)\r\n        std::cout &lt;&lt; val &lt;&lt; ' ';\r\n}\r\n<\/code><\/pre>\n<p>\u901a\u8fc7 <code>zip_transform<\/code>\uff0c\u6211\u4eec\u5b9e\u73b0\u4e86\u4e24\u4e2a\u5411\u91cf\u5bf9\u5e94\u5143\u7d20\u7684\u6c42\u548c\u64cd\u4f5c\uff0c\u4e0d\u4ec5\u51cf\u5c11\u4e86\u6837\u677f\u4ee3\u7801\uff0c\u8fd8\u63d0\u5347\u4e86\u6267\u884c\u6548\u7387\u3002\u5c24\u5176\u5728\u670d\u52a1\u5668\u7aef\u8fdb\u884c\u6279\u91cf\u6570\u636e\u5408\u5e76\u4e0e\u8ba1\u7b97\u65f6\uff0c\u8be5\u7279\u6027\u5c24\u4e3a\u5b9e\u7528\u3002<\/p>\n<h2>zip \u4e0e zip_transform \u7684\u5bf9\u6bd4\u5206\u6790<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u5bf9\u6bd4\u70b9<\/th>\n<th>views::zip<\/th>\n<th>views::zip_transform<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u529f\u80fd<\/td>\n<td>\u7ec4\u5408\u591a\u4e2a\u8303\u56f4\u4e3a\u5143\u7ec4<\/td>\n<td>\u5728\u7ec4\u5408\u57fa\u7840\u4e0a\u6267\u884c\u51fd\u6570\u5904\u7406<\/td>\n<\/tr>\n<tr>\n<td>\u4f7f\u7528\u95e8\u69db<\/td>\n<td>\u8bed\u6cd5\u7b80\u5355\uff0c\u903b\u8f91\u76f4\u89c2<\/td>\n<td>\u9700\u989d\u5916\u4f20\u5165\u51fd\u6570\u5bf9\u8c61<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u573a\u666f<\/td>\n<td>\u6570\u636e\u5e76\u884c\u904d\u5386\u3001\u7ed3\u6784\u7ec4\u5408<\/td>\n<td>\u6570\u636e\u8fd0\u7b97\u3001\u8f6c\u6362\u3001\u6620\u5c04\u7b49\u66f4\u590d\u6742\u903b\u8f91<\/td>\n<\/tr>\n<tr>\n<td>\u6027\u80fd\u8868\u73b0<\/td>\n<td>\u5feb\u901f\u7ec4\u5408\uff0c\u65e0\u8fd0\u7b97\u5f00\u9500<\/td>\n<td>\u7ed3\u5408\u51fd\u6570\u6267\u884c\uff0c\u9002\u5408\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5728\u5f00\u53d1\u6d89\u53ca\u591a\u4e2a\u6570\u636e\u6e90\u7684\u670d\u52a1\u7aef\u903b\u8f91\u65f6\uff0c\u5408\u7406\u8fd0\u7528\u8fd9\u4e24\u4e2a\u5de5\u5177\u4e0d\u4ec5\u53ef\u4ee5\u7b80\u5316\u4ee3\u7801\u7ed3\u6784\uff0c\u8fd8\u80fd\u63d0\u5347\u6574\u4f53\u7cfb\u7edf\u54cd\u5e94\u901f\u5ea6\u3002\u6b64\u65f6\uff0c\u90e8\u7f72\u5728\u9ad8\u6027\u80fd\u7684<strong>\u7f8e\u56fdVPS<\/strong>\u670d\u52a1\u5668\u4e0a\u5c06\u5e26\u6765\u66f4\u4f18\u7684\u6267\u884c\u6548\u7387\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>C++23 \u6240\u5f15\u5165\u7684 <code>views::zip<\/code> \u4e0e <code>views::zip_transform<\/code> \u662f\u73b0\u4ee3 C++ \u63d0\u9ad8\u4ee3\u7801\u8868\u73b0\u529b\u548c\u6267\u884c\u6548\u7387\u7684\u91cd\u8981\u5de5\u5177\u3002\u5b83\u4eec\u4f9d\u6258 Ranges \u5e93\uff0c\u5b9e\u73b0\u4e86\u5bf9\u591a\u4e2a\u8303\u56f4\u7684\u7075\u6d3b\u7ec4\u5408\u4e0e\u5904\u7406\u3002\u5728\u9879\u76ee\u4e2d\u5408\u7406\u5e94\u7528\u8fd9\u4e9b\u7279\u6027\uff0c\u4e0d\u4ec5\u80fd\u591f\u51cf\u5c11\u5197\u4f59\u903b\u8f91\uff0c\u8fd8\u80fd\u663e\u8457\u63d0\u5347\u4ee3\u7801\u8d28\u91cf\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u6784\u5efa\u4e00\u4e2a\u9ad8\u6027\u80fd\u3001\u5e76\u53d1\u6027\u5f3a\u7684\u540e\u7aef\u7cfb\u7edf\uff0c\u5efa\u8bae\u5c06\u9879\u76ee\u90e8\u7f72\u5728\u4e00\u53f0\u7a33\u5b9a\u53ef\u9760\u7684 <a href=\"https:\/\/fwq.ai\/\"><strong>\u7f8e\u56fd\u670d\u52a1\u5668<\/strong><\/a>\u3002\u4e0d\u4ec5\u63d0\u4f9b\u8d85\u9ad8\u5e26\u5bbd\u4e0e\u8d44\u6e90\u9694\u79bb\u80fd\u529b\uff0c\u8fd8\u80fd\u4e3a\u590d\u6742\u7684 C++ \u5e76\u884c\u8ba1\u7b97\u4efb\u52a1\u63d0\u4f9b\u7a33\u56fa\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f15\u8a00 \u968f\u7740 C++ \u6807\u51c6\u4e0d\u65ad\u6f14\u8fdb\uff0cC++23 \u4e3a\u5f00\u53d1\u8005\u5e26\u6765\u4e86\u66f4\u591a\u9ad8\u6548\u4e14\u5b9e\u7528\u7684\u65b0\u7279\u6027\u3002\u5176\u4e2d\uff0cviews::zip \u4e0e views::zip_transform \u662f\u4e24\u4e2a\u5f15\u4eba\u6ce8\u76ee\u7684\u8303\u56f4\u89c6\u56fe\uff08views\uff09\u9002\u914d\u5668\uff0c\u5b83\u4eec\u7684\u5f15\u5165\u4e3a\u591a\u5e8f\u5217\u5e76\u884c\u5904\u7406\u63d0\u4f9b\u4e86\u66f4\u52a0\u7075\u6d3b\u3001\u53ef\u7ec4\u5408\u7684\u89e3\u51b3\u65b9\u6848\u3002\u5bf9\u4e8e\u9700\u8981\u9ad8\u6027\u80fd\u8ba1\u7b97\u8d44\u6e90\u7684\u573a\u666f\u800c\u8a00\uff0c\u9009\u7528\u9ad8\u7a33\u5b9a\u6027\u4e0e\u8ba1\u7b97\u80fd\u529b\u517c\u5907\u7684\u7f8e\u56fd\u670d\u52a1\u5668\uff0c\u65e0\u7591\u80fd\u591f\u66f4\u597d\u5730\u53d1\u6325\u8fd9\u4e9b\u8bed\u8a00\u7279\u6027\u7684\u4f18\u52bf\u3002 \u672c\u6587\u5c06\u6df1\u5165\u4ecb\u7ecd\u8fd9\u4e24\u4e2a\u65b0\u5de5\u5177\u7684\u529f\u80fd\u3001\u5e94\u7528\u573a\u666f\u4e0e\u4ee3\u7801\u5b9e\u73b0\uff0c\u52a9\u529b\u6280\u672f\u4eba\u5458\u66f4\u597d\u5730\u638c\u63e1 C++23 \u7684\u73b0\u4ee3\u7f16\u7a0b\u8303\u5f0f\u3002 C++23 \u4e0e Ranges \u5e93\u6982\u8ff0 C++23 \u7684\u8fdb\u5316\u4eae\u70b9 \u76f8\u8f83\u4e8e C++20\uff0cC++23 \u66f4\u50cf\u662f\u4e00\u6b21\u6e10\u8fdb\u5f0f\u589e\u5f3a\uff0c\u5728\u4fdd\u7559\u5df2\u6709\u8303\u5f0f\u7684\u57fa\u7840\u4e0a\uff0c\u52a0\u5165\u4e86\u8bb8\u591a\u63d0\u5347\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u5f00\u53d1\u6548\u7387\u7684\u5b9e\u7528\u5de5\u5177\u3002\u5176\u4e2d\u6700\u91cd\u8981\u7684\u66f4\u65b0\u4e4b\u4e00\u5c31\u662f\u7ee7\u7eed\u5b8c\u5584 Ranges \u5e93\uff0c\u4e3a\u73b0\u4ee3 C++ \u63d0\u4f9b\u66f4\u5f3a\u7684\u8868\u8fbe\u80fd\u529b\u3002 \u518d\u8ba4\u8bc6 Ranges \u4e0e views \u5728 C++20 \u4e2d\uff0cRanges \u5e93\u7684\u5f15\u5165\u5f7b\u5e95\u6539\u53d8\u4e86\u5bf9\u5e8f\u5217\u6570\u636e\u7684\u5904\u7406\u65b9\u5f0f\u3002\u901a\u8fc7 std::views \u63d0\u4f9b\u7684\u4e00\u7cfb\u5217\u51fd\u6570\u5f0f\u64cd\u4f5c\u63a5\u53e3\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u50cf\u5904\u7406\u6d41\u4e00\u6837\u5bf9\u6570\u636e\u5e8f\u5217\u8fdb\u884c\u8fc7\u6ee4\u3001\u6620\u5c04\u3001\u5206\u7247\u7b49\u64cd\u4f5c\u3002\u4f8b\u5982\uff1a #include &lt;iostream&gt; #include &lt;vector&gt; #include &lt;ranges&gt; int main() { std::vector&lt;int&gt; nums = {1, 2, 3, 4, 5, 6}; auto filtered = 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