{"id":75,"date":"2023-10-06T14:08:07","date_gmt":"2023-10-06T06:08:07","guid":{"rendered":"https:\/\/wp.minicoda.com\/?p=75"},"modified":"2024-10-26T16:16:35","modified_gmt":"2024-10-26T08:16:35","slug":"%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e5%a4%a7%e5%b0%8f","status":"publish","type":"post","link":"https:\/\/wp.minicoda.com\/index.php\/%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e5%a4%a7%e5%b0%8f\/","title":{"rendered":"\u6570\u636e\u7c7b\u578b\u5927\u5c0f"},"content":{"rendered":"\n<p>  \u7f16\u8bd1\u578b\u8bed\u8a00\u6570\u636e\u7c7b\u578b\u5927\u5c0f\u6bd4\u8f83\u786e\u5b9a\uff0c\u53ef\u80fd\u6709\u591a\u79cd\uff0c\u4f46\u5177\u4f53\u5728\u7279\u5b9a\u5e73\u53f0\u7279\u5b9a\u7f16\u8bd1\u5668\uff0c\u5927\u5c0f\u4e00\u5b9a\u662f\u786e\u5b9a\u7684\u3002\u89e3\u91ca\u578b\u8bed\u8a00\u6216\u811a\u672c\u5904\u7406\u6570\u636e\u7c7b\u578b\u66f4\u81ea\u7531\uff0c\u9ed8\u8ba4\u770b\u6210\u201c\u5b57\u7b26\u4e32\u201d\uff0c\u5728\u505a\u6570\u503c\u8fd0\u7b97\u81ea\u52a8\u8f6c\u6362\u3002\u672c\u6587\u4e0d\u8fc7\u591a\u8ba8\u8bba\u811a\u672c\u7c7b\u8bed\u8a00\uff0c\u5b83\u4eec\u4e0d\u592a\u5173\u5fc3\u8fd9\u4e48\u591a\u7ec6\u8282\u3002<\/p>\n\n\n\n<p>  \u4ee5\u5982\u4e0b\u6807\u51c6\u7684\u6570\u636e\u7c7b\u578b\u4e3a\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>char \/ short \/ int \/ long (long) \/ float \/ (long) double<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">sizeof<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\/ObjC\/C++\/C# \u90fd\u63d0\u4f9bsizeof\u8fd0\u7b97\u7b26\u8ba1\u7b97\u7c7b\u578b\u5927\u5c0f\uff0c\u5c3d\u7ba1\u5982\u6b64\uff0c\u7f16\u8bd1\u578b\u8bed\u8a00\u7c7b\u578b\u5927\u5c0f\u4e0d\u662f\u5b8c\u5168\u7edf\u4e00\uff0c\u751a\u81f3\u5b8c\u5168\u4e0d\u662f\u9884\u671f\u3002<\/li>\n\n\n\n<li>C\/ObjC\/C++ sizeof\u65e2\u662f\u5173\u952e\u5b57\u53c8\u662f\u8fd0\u7b97\u7b26\uff0c\u6b64\u8fd0\u7b97\u7b26\u662f\u7f16\u8bd1\u5668\u8ba1\u7b97\u800c\u975e\u8fd0\u884c\u671f\u8ba1\u7b97\u3002\u6bd4\u8f83\u6709\u610f\u601d\u7684\u662f\uff0c\u867d\u7136\u662f\u7f16\u8bd1\u671f\u53ef\u8ba1\u7b97\uff0c\u5b83\u4e0d\u80fd\u7528\u4e8e\u5b8f\u6761\u4ef6\u7f16\u8bd1\u5224\u65ad\u3002<\/li>\n\n\n\n<li>Java\u6ca1\u6709sizeof\u8fd0\u7b97\u7b26\uff0c\u56e0\u4e3a\u5b83\u8ba4\u4e3a\u6240\u6709\u6570\u636e\u7c7b\u578b\u5927\u5c0f\u90fd\u662f\u786e\u5b9a\u7684\uff0c\u4f9d\u7136\u53ef\u4ee5\u7528&lt;TYPE&gt;.SIZE\u5f97\u5230\u7c7b\u578b\u7684\u6bd4\u7279\u6570\u3002<br>Integer.SIZE\u8fd4\u56de32.<\/li>\n\n\n\n<li>Python\u7528getsizeof\u83b7\u53d6\u53d8\u91cf\u5927\u5c0f\uff0c\u5305\u62ec\u5bf9\u8c61\u7684\u5176\u4ed6\u5185\u5b58\u5f00\u9500\uff0c\u5982\u4e0b\u5e76\u4e0d\u662f\u7b49\u4e8e4\u6216\u80058.<br>sys.getsizeof(1)<\/li>\n\n\n\n<li>\u7ed3\u6784\u4f53\u7684\u5927\u5c0f\u4e0d\u4e00\u5b9a\u7b49\u4e8e\u6240\u6709\u6210\u5458\u5927\u5c0f\u4e4b\u548c\uff0c\u5bf9\u9f50\u5f71\u54cd\u6700\u7ec8\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li>\u7a7a\u7c7b\u5927\u5c0f\u662f0\u5417? C++\u4e0d\u4e3a0\uff0c\u4e3a\u4e86\u907f\u514d\u4e0d\u540c\u5bf9\u8c61\u5728\u540c\u4e00\u4e2a\u5730\u5740\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">char\u7c7b\u578b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\/ObjC\/C++ char\u7c7b\u578b\u4e3a1\u5b57\u8282\uff0cwchar_t\u4e00\u822c\u4e3a2\u5b57\u8282\u3002\n<ul class=\"wp-block-list\">\n<li>ObjC NSString\u5b57\u7b26\u4e32\u5185\u90e8\u9ed8\u8ba4\u662fUTF-16\u7f16\u7801\uff0c\u4e00\u4e2a\u5b57\u7b26\u662f2\u5b57\u8282\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Java\/C# char\u7c7b\u578b\u9ed8\u8ba4\u662fUnicode\u5b57\u7b26\uff0c2\u5b57\u8282\u3002<br>C# char\u7c7b\u578b\u548cushort\u7c7b\u578b\u8303\u56f4\u662f\u4e00\u6837\u7684\u3002<\/li>\n\n\n\n<li>Go\u6709\u4e24\u79cd\u5b57\u7b26\u7c7b\u578b\uff0cbyte\u662f\u4ee5\u5f80\u76841\u5b57\u8282\u5b57\u7b26\uff0crune\u4ee3\u88684\u5b57\u8282Unicode\u5b57\u7b26(\u76f8\u5f53\u4e8eint32\u7c7b\u578b)\u3002<\/li>\n\n\n\n<li>Swift\u7528Character\u4ee3\u8868\u5b57\u7b26\u7c7b\u578b\uff0cSwift 5\u4e4b\u524d\u9ed8\u8ba4\u5b57\u7b26\u662fUTF-16\u6216ASCII\u7801\u5b58\u50a8\uff0c\u5373\u4e00\u4e2a\u5b57\u7b26\u53ef\u80fd\u662f1\u5b57\u8282\u62162\u5b57\u8282\uff0cSwift 5\u4e4b\u540e(\u5305\u542b)\u9ed8\u8ba4\u662fUTF-8\u7f16\u7801\uff0c\u6839\u636e\u5b57\u7b26\u6240\u5c5e\u8303\u56f4\u957f\u5ea6\u4e0d\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">short\u7c7b\u578b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fortran\u652f\u6301\u7684\u6574\u5f62\u4e4b\u4e00\uff0ckind = 2\u4ee3\u88682\u5b57\u8282\u3002<\/li>\n\n\n\n<li>C\/C++\u4e0d\u76f4\u63a5\u89c4\u5b9a\u5b83\u7684\u957f\u5ea6\uff0c\u8981\u6c42\u4e0d\u5927\u4e8eint\u7c7b\u578b\uff0c\u4e0d\u5c0f\u4e8echar\u7c7b\u578b\u3002\u5177\u4f53\u5b9e\u73b0\u4e00\u822c\u4e3a2\u5b57\u8282\u3002<\/li>\n\n\n\n<li>Java\/C#\u4e2dshort\u56fa\u5b9a\u4e3a2\u5b57\u8282\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">int\u7c7b\u578b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>int\u7c7b\u578b\u4ee3\u8868\u8ba1\u7b97\u673a\u7cfb\u7edf\u5904\u7406\u6574\u5f62\u6700\u81ea\u7136\u7684\u957f\u5ea6\uff0c\u4e00\u822c\u548c\u6570\u636e\u5bc4\u5b58\u5668\u957f\u5ea6\u4e00\u6837\u3002<\/li>\n\n\n\n<li>\u548cshort\u7c7b\u578b\uff0cFortran kind=4\u5373\u4ee3\u8868\u5e38\u89c4\u610f\u4e49\u7684\u6807\u51c6\u7684\u6574\u5f62\u3002<\/li>\n\n\n\n<li>\u548cshort\u7c7b\u4f3c\uff0cC\/ObjC\/C++\u4e0d\u76f4\u63a5\u89c4\u5b9a\u5b83\u7684\u957f\u5ea6\uff0c\u8981\u6c42\u4e0d\u5927\u4e8elong\u7c7b\u578b\uff0c\u4e0d\u5c0f\u4e8eshort\u7c7b\u578b\u3002\u5177\u4f53\u5b9e\u73b0\u4e00\u822c\u4e3a4\u5b57\u8282\u3002\n<ul class=\"wp-block-list\">\n<li>\u4e00\u822c\u800c\u8a00\uff0c16\u4f4d\u7cfb\u7edfint\u662f2\u5b57\u8282\uff0c32\u4f4d\u7cfb\u7edfint\u4e3a4\u5b57\u8282\uff0c\u800c64\u4f4d\u7cfb\u7edf\u5e76\u4e0d\u4e00\u5b9a\u662f8\u5b57\u8282\uff0c\u56e0\u4e3a\u6709long\u7684\u5b58\u5728\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Java\/C#\u56fa\u5b9a\u4e3a4\u5b57\u8282\u3002<\/li>\n\n\n\n<li>Rust isize\u548cusize\u7c7b\u578b\u957f\u5ea6\u53d6\u51b3\u4e8e\u76ee\u6807\u5e73\u53f0\uff0ci32\u548ci64\u662f\u56fa\u5b9a\u5927\u5c0f\u3002<\/li>\n\n\n\n<li>\u4ed3\u9889Int32\u56fa\u5b9a4\u5b57\u8282\uff0cInt64\u56fa\u5b9a8\u5b57\u8282\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">long\u7c7b\u578b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\/C++\u89c4\u5b9along\u7c7b\u578b\u53ea\u8981\u4e0d\u5c0f\u4e8eint\u7c7b\u578b\u5373\u53ef\u3002<\/li>\n\n\n\n<li>Fortran kind=8\u4ee3\u88688\u5b57\u8282\u6574\u5f62\uff0c\u6709\u70b9\u7c7b\u4f3c\u4e8e64\u4f4d\u7cfb\u7edflong\u7684\u957f\u5ea6(\u4e00\u822c\u800c\u8a00)\u3002<\/li>\n\n\n\n<li>32\u4f4d\u7f16\u8bd1\u5668\uff0cint\u548clong\u4e00\u822c\u90fd\u8bbe\u7f6e\u4e3a4\u5b57\u8282\uff0c\u53e6\u5916Windows 16\u4f4d\u73af\u5883\u4e0blong\u4e5f\u662f4\u5b57\u8282\u3002<\/li>\n\n\n\n<li>64\u4f4d\u7f16\u8bd1\u5668\uff0cLinux\u5e73\u53f0long\u4e00\u822c\u63d0\u5347\u52308\u5b57\u8282\uff0cint\u4e00\u822c\u4fdd\u6301\u4e3a4\u5b57\u8282\uff1bWindows\u5e73\u53f0long\u548cint\u4fdd\u6301\u4e3a4\u5b57\u8282\uff0c\u7528long long\u8868\u793a8\u5b57\u8282\u3002\u8fd9\u662f\u7531\u4e8eWin64\u4f7f\u7528LLP64\u6a21\u578b\uff0cLinux 64\u4f4d\u4f7f\u7528LP64.\n<ul class=\"wp-block-list\">\n<li>\u5173\u4e8eWindows 64\u4f4dLLP64\u6a21\u578b\uff0c\u53ef\u53c2\u8003: <a href=\"https:\/\/devblogs.microsoft.com\/oldnewthing\/20050131-00\/?p=36563\">Why did the Win64 team choose the LLP64 model?<\/a><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Java\/C#\u56fa\u5b9a\u4e3a8\u5b57\u8282\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">long long\u7c7b\u578b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5927\u90e8\u5206\u7f16\u8bd1\u5668\u8ba4\u4e3a\u5b83\u4e0d\u5c0f\u4e8elong\u7c7b\u578b\u5373\u53ef\uff0c\u572864\u4f4d\u7cfb\u7edf\u4e00\u822c\u4e3a8\u5b57\u8282\u3002\u56e0\u4e3a\u76ee\u524d\u6ca1\u6709\u5e7f\u6cdb\u4f7f\u7528128\u4f4d\u7cfb\u7edf\uff0clong long\u4e00\u822c\u4e0d\u4f1a\u8d85\u8fc716\u5b57\u8282\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">float\u7c7b\u578b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u822cfloat\u7c7b\u578b\u5b9a\u4e49\u4e3a4\u5b57\u8282\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">double\u7c7b\u578b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u822cdouble\u7c7b\u578b\u5b9a\u4e49\u4e3a8\u5b57\u8282\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">long double\u7c7b\u578b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u822clong double\u7c7b\u578b\u81f3\u5c11\u4e0d\u5c0f\u4e8edouble\u7c7b\u578b\uff0c\u4e0d\u540c\u7f16\u8bd1\u5668\u73af\u5883\u6709\u5dee\u5f02\u3002<\/li>\n\n\n\n<li>\u4e0d\u4e00\u5b9a\u662f16\u5b57\u8282\uff0c\u53ef\u80fd\u4fdd\u6301\u548cdouble\u7c7b\u578b\u4e00\u6837\u4e3a8\u5b57\u8282\uff0c\u4e5f\u53ef\u80fd\u662f10\u5b57\u8282\u3002<\/li>\n\n\n\n<li>32\u4f4d\u7684gcc\u6bd4\u8f83\u7279\u6b8a\uff0clong double\u957f\u5ea6\u4e3a12\u5b57\u8282\u3002gcc\u4e5f\u63d0\u4f9b\u7f16\u8bd1\u9009\u9879\u9009\u62e9long double\u7684\u957f\u5ea6\uff0c\u4f8b\u5982: -m128bit-long-double\u6216-mlong-double-80\u7b49\u7b49.<\/li>\n\n\n\n<li>\u5e26\u590d\u6570\u7684complex long double\u7c7b\u578b\u4e00\u822c\u662flong double\u76842\u500d\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">char *\u7c7b\u578b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\/C++\u5bf9char *\u7c7b\u578b\u7684\u5904\u7406\u4e0d\u80fd\u5b8c\u5168\u6309\u6307\u9488\uff0c\u8981\u6839\u636e\u4e0a\u4e0b\u6587\u3002\n<ul class=\"wp-block-list\">\n<li>sizeof(\"hello\")\u8fd4\u56de5\uff0c\u800c\u4e0d\u662f\u6307\u9488\u7684\u5927\u5c0f4\u6216\u80058.<\/li>\n\n\n\n<li>\u6570\u7ec4\u53d8\u91cf\u7684sizeof\u8fd4\u56de\u6570\u7ec4\u5927\u5c0f\uff0c\u800c\u975e\u6570\u7ec4\u7684\u5f71\u5b50\u6307\u9488\u5927\u5c0f\u3002\n<ul class=\"wp-block-list\">\n<li>\u603b\u7ed3\u8d77\u6765\uff0c\u5f53\u7f16\u8bd1\u5668\u80fd\u77e5\u9053\u5b83\u7684\u5927\u5c0f\uff0c\u5c31\u6309\u90a3\u4e2a\u5927\u5c0f\uff0c\u4e0d\u80fd\u786e\u5b9a\u5927\u5c0f\uff0c\u6309\u6307\u9488\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u7f16\u8bd1\u578b\u8bed\u8a00\u6570\u636e\u7c7b\u578b\u5927\u5c0f\u6bd4\u8f83\u786e\u5b9a\uff0c\u53ef\u80fd\u6709\u591a\u79cd\uff0c\u4f46\u5177\u4f53\u5728\u7279\u5b9a\u5e73\u53f0\u7279\u5b9a\u7f16\u8bd1\u5668\uff0c\u5927\u5c0f\u4e00\u5b9a\u662f\u786e\u5b9a\u7684\u3002\u89e3\u91ca\u578b\u8bed\u8a00\u6216\u811a\u672c\u5904\u7406\u6570\u636e\u7c7b\u578b\u66f4\u81ea\u7531\uff0c\u9ed8\u8ba4\u770b\u6210\u201c\u5b57\u7b26\u4e32\u201d\uff0c\u5728\u505a\u6570\u503c\u8fd0\u7b97\u81ea\u52a8\u8f6c\u6362\u3002\u672c\u6587\u4e0d\u8fc7\u591a\u8ba8\u8bba\u811a\u672c\u7c7b\u8bed\u8a00\uff0c\u5b83\u4eec\u4e0d&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,8],"tags":[17,9],"class_list":["post-75","post","type-post","status-publish","format-standard","hentry","category-19","category-8","tag-17","tag-9"],"views":187,"_links":{"self":[{"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/posts\/75","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/comments?post=75"}],"version-history":[{"count":14,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/posts\/75\/revisions"}],"predecessor-version":[{"id":3162,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/posts\/75\/revisions\/3162"}],"wp:attachment":[{"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/media?parent=75"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/categories?post=75"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/tags?post=75"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}