{"id":672,"date":"2022-10-26T12:29:36","date_gmt":"2022-10-26T04:29:36","guid":{"rendered":"https:\/\/closer.cclo.idv.tw\/?p=672"},"modified":"2023-04-13T11:33:41","modified_gmt":"2023-04-13T03:33:41","slug":"%e5%b0%87%e5%8f%aa%e6%9c%89-ascii-%e7%af%84%e5%9c%8d%e7%9a%84-wstring-%e8%bd%89%e6%8f%9b%e6%88%90-string","status":"publish","type":"post","link":"https:\/\/blog.cclo.idv.tw\/?p=672","title":{"rendered":"\u5c07\u53ea\u6709 ASCII \u7bc4\u570d\u7684 wstring \u8f49\u63db\u6210 string"},"content":{"rendered":"\n<p>Windows \u7684\u7a0b\u5f0f\uff0c\u82e5\u662f Unicode enabled \u7684\u8a71\uff0c\u9810\u8a2d\u4f7f\u7528\u7684\u7de8\u78bc\u662f UTF-16\uff0c\u6bcf\u500b\u5b57\u5143\u7684\u578b\u5225\u70ba <code>wchar_t<\/code>\u3002\u9019\u6a23\u7684\u5b57\u4e32\uff0c\u7121\u6cd5\u4f7f\u7528 <code>std::string<\/code> \u8655\u7406\uff0c\u5fc5\u9808\u6539\u7528 <code>std::wstring<\/code>\u3002\u4f46\u6709\u6642\u5019\uff0c\u73fe\u6709\u7684\u51fd\u5f0f\u5982\u679c\u53ea\u5403 <code>std::string<\/code>\uff0c\u800c\u4e14\u6211\u5011\u7684\u5b57\u4e32\u53c8\u53ea\u5305\u542b\u6709 ASCII \u5b9a\u7fa9\u7684\u5b57\u5143\uff08\u4e5f\u5c31\u662f\u53ea\u6709\u82f1\u6587\u53ca\u534a\u578b\u7b26\u865f\uff09\u7684\u8a71\uff0c\u6211\u5011\u5c31\u5fc5\u9808\u628a <code>std::wstring<\/code> \u8f49\u6210 <code>std::string<\/code>\u3002<\/p>\n\n\n\n<p>\u6709\u4e00\u7a2e\u6bd4\u8f03\u5077\u61f6\u7684\u505a\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-cpp\">std::wstring ws(L&quot;Hello&quot;);\nstd::string s(ws.begin(), ws.end());<\/code><\/pre>\n\n\n\n<p>\u4f46\u662f\u5728\u6bd4\u8f03\u56b4\u8b39\u7684 C++ \u7de8\u8b6f\u5668\uff08\u4f8b\u5982 VS 2022\uff09\uff0c\u5c31\u6703\u767c\u51fa\u8b66\u544a\uff08\u56e0\u70ba\u96b1\u5f0f\u628a <code>wchar_t<\/code> \u8f49\u63db\u6210 <code>char<\/code>\uff0c\u53ef\u80fd\u9020\u6210\u8cc7\u6599\u6d41\u5931\uff09\u3002\u60f3\u8981\u907f\u958b\u8b66\u544a\uff0c\u5c31\u5fc5\u9808\u660e\u78ba\u4f7f\u7528 <code>static_cast&lt;&gt;<\/code> \u9032\u884c\u8cc7\u6599\u8f49\u63db\u3002\u6b64\u6642\u5c31\u53ef\u4ee5\u5229\u7528 <code>std::transform()<\/code> \u4f86\u505a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-\">std::wstring ws(L&quot;Hello&quot;);\nstd::string s(ws.size(), 0);\nstd::transform(ws.begin(), ws.end(), s.begin(), [](wchar_t c){\n    return static_cast&lt;char&gt;c;\n});<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Windows \u7684\u7a0b\u5f0f\uff0c\u82e5\u662f Unicode enabled \u7684\u8a71\uff0c\u9810\u8a2d\u4f7f\u7528\u7684\u7de8\u78bc\u662f UTF-16\uff0c\u6bcf\u500b\u5b57\u5143\u7684 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[13],"tags":[65,66,46],"table_tags":[],"class_list":["post-672","post","type-post","status-publish","format-standard","hentry","category--computer-science","tag-c","tag-string","tag-unicode"],"aioseo_notices":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=672"}],"version-history":[{"count":4,"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/672\/revisions"}],"predecessor-version":[{"id":690,"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/672\/revisions\/690"}],"wp:attachment":[{"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=672"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/blog.cclo.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftable_tags&post=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}