{"id":2625,"date":"2023-04-04T00:43:28","date_gmt":"2023-04-03T16:43:28","guid":{"rendered":"https:\/\/lonelinerd.com\/?p=2625"},"modified":"2023-04-25T00:56:04","modified_gmt":"2023-04-24T16:56:04","slug":"design-pattern-state-pattern","status":"publish","type":"post","link":"https:\/\/lonelinerd.com\/index.php\/2023\/04\/04\/design-pattern-state-pattern\/","title":{"rendered":"\u8a2d\u8a08\u6a21\u5f0f\u7b46\u8a18 \u2013 \u72c0\u614b\u6a21\u5f0f"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2625\" class=\"elementor elementor-2625\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-03b2248 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"03b2248\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d205c5f\" data-id=\"d205c5f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4c4f2f8 elementor-widget elementor-widget-text-editor\" data-id=\"4c4f2f8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<h4 class=\"md-end-block md-heading\"><span style=\"text-decoration: underline;\"><strong><span class=\"md-plain md-expand\">\u5206\u985e<\/span><\/strong><\/span><\/h4><ul><li>\u884c\u70ba\u578b<\/li><\/ul><h4 class=\"md-end-block md-heading\"><span style=\"text-decoration: underline;\"><strong><span class=\"md-plain md-expand\">\u6a21\u5f0f\u7684\u76ee\u7684\uff08\u5b9a\u7fa9\uff09<\/span><\/strong><\/span><\/h4><ul><li>\u4f7f\u4e0a\u4e0b\u6587\u5c0d\u8c61\u5728\u6301\u7e8c\u8b8a\u63db\u7684\u72c0\u614b\u4e2d\uff0c\u6839\u64da\u4e0d\u540c\u7684\u72c0\u614b\u5be6\u73fe\u4e0d\u540c\u7684\u884c\u70ba<ul><li>\u00a0\u6bcf\u4e00\u500b\u72c0\u614b\u90fd\u662f\u4e00\u500b\u5c0d\u8c61\uff0c\u72c0\u614b\u5167\u90e8\u6709\u5c0d\u61c9\u7684\u9032\u5165\/\u57f7\u884c\/\u9000\u51fa\u7b49\u7b49\u7684\u908f\u8f2f<\/li><li>\u4e0a\u4e0b\u6587\u5c0d\u8c61\u5167\u90e8\u6301\u6709\u5f88\u591a\u8b8a\u91cf\uff0c\u8b93\u72c0\u614b\u6a5f\/\u81ea\u8eab\u5224\u65b7\u76ee\u524d\u8a72\u8655\u65bc\u751a\u9ebc\u72c0\u614b\u4ee5\u53ca\u63a7\u5236\u72c0\u614b\u7684\u5207\u63db\uff1b\u4e26\u5f15\u7528\u4e00\u500b\u7576\u524d\u7684\u72c0\u614b\u5c0d\u8c61\uff0c\u6301\u7e8c\u57f7\u884c\u9019\u500b\u7576\u524d\u72c0\u614b\u7684\u908f\u8f2f<\/li><li>\u5982\u679c\u4e0d\u7528\u72c0\u614b\u6a21\u5f0f\uff0c\u5c31\u53ea\u80fd\u7528\u591a\u500bif-else\u8a9e\u53e5\u4f86\u904b\u884c\u4e0d\u540c\u72c0\u614b\u7684\u5207\u63db\u548c\u72c0\u614b\u908f\u8f2f<\/li><\/ul><\/li><\/ul><h4 class=\"md-end-block md-heading\"><span style=\"text-decoration: underline;\"><strong><span class=\"md-plain md-expand\">\u4f7f\u7528\u5834\u666f\u4f8b\u5b50<\/span><\/strong><\/span><\/h4><ul><li>\u6709\u9650\u72c0\u614b\u6a5f\uff08Finite-State-Machine\uff09<ul><li>\u904a\u6232\u958b\u767c\u4e2d\u6700\u5e38\u898b\u7684\u72c0\u614b\u6a21\u5f0f\u7684\u4e00\u7a2e\u61c9\u7528\uff0c\u4e00\u822c\u7528\u65bc\u505a\u4e00\u4e9b\u7c21\u55ae\u7684AI\u908f\u8f2f<\/li><li>\u5982\u4e00\u500b\u6575\u4eba\u6709\u4ee5\u4e0b\u72c0\u614b\u5404\u5c0d\u61c9\u7684\u884c\u52d5\uff1a<ul><li>\u5e38\u614b = \u5de1\u908f<\/li><li>\u767c\u73fe\u73a9\u5bb6 = \u8ffd\u6483<\/li><li>\u4e1f\u5931\u73a9\u5bb6 = \u5c0b\u627e<\/li><\/ul><\/li><li>\u5c31\u53ef\u4ee5\u5275\u5efa\u4ee5\u4e0a\u4e09\u500b\u72c0\u614b\u985e\uff0c\u4e26\u8b93\u6575\u4eba\u81ea\u5df1\u6839\u64da\u73a9\u5bb6\u7684\u767c\u73fe\u72c0\u614b\uff08\u6c92\u767c\u73fe\u3001\u5df2\u767c\u73fe\u3001\u767c\u73fe\u4f46\u4e1f\u5931\uff09\uff0c\u4f86\u5224\u65b7\u5176\u7576\u524d\u61c9\u57f7\u884c\u7684\u884c\u70ba<\/li><\/ul><\/li><\/ul><h4 class=\"md-end-block md-heading\"><span style=\"text-decoration: underline;\"><strong><span class=\"md-plain md-expand\">\u985e\u5716<\/span><\/strong><\/span><\/h4>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e2dedb0 elementor-widget elementor-widget-image\" data-id=\"e2dedb0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"810\" height=\"376\" src=\"https:\/\/lonelinerd.com\/wp-content\/uploads\/2023\/04\/HN38SV9856M8N38V0.png\" class=\"attachment-large size-large wp-image-2886\" alt=\"\" srcset=\"https:\/\/lonelinerd.com\/wp-content\/uploads\/2023\/04\/HN38SV9856M8N38V0.png 810w, https:\/\/lonelinerd.com\/wp-content\/uploads\/2023\/04\/HN38SV9856M8N38V0-300x139.png 300w, https:\/\/lonelinerd.com\/wp-content\/uploads\/2023\/04\/HN38SV9856M8N38V0-768x357.png 768w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25ce5a3 elementor-widget elementor-widget-text-editor\" data-id=\"25ce5a3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<h4 class=\"md-end-block md-heading\"><span style=\"text-decoration: underline;\"><strong><span class=\"md-plain md-expand\">\u8207\u7b56\u7565\u6a21\u5f0f\u7684\u5dee\u7570<\/span><\/strong><\/span><\/h4><ul><li>\u72c0\u614b\u6a21\u5f0f\u8207\u7b56\u7565\u6a21\u5f0f\u5f88\u985e\u4f3c\uff0c\u540c\u6a23\u662f\u70ba\u652f\u6301\u5c0d\u8c61\u5728\u4e0d\u540c\u60c5\u6cc1\u4e0b\u57f7\u884c\u4e0d\u540c\u7684\u884c\u70ba\uff0c\u4f46\u662f\u5169\u8005\u7684\u610f\u5716\u3001\u7dad\u5ea6\u4e26\u4e0d\u4e00\u6a23\uff1a<br \/><ul><li>\u7b56\u7565\u6a21\u5f0f\u662f\u70ba\u4e86\u89e3\u6c7a\u901a\u904e\u5b50\u985e\u5316\u64f4\u5c55\u67d0\u985e\u5c0d\u8c61\u7684\u529f\u80fd\uff0c\u5c0e\u81f4\u7e7c\u627f\u7d50\u69cb\u81c3\u816b\uff0c\u7f3a\u4e4f\u5f48\u6027\u7684\u554f\u984c\u800c\u51fa\u73fe\u7684\u66ff\u4ee3\u65b9\u6848<ul><li>\u6240\u4ee5\uff0c\u5c0d\u8c61\u4e00\u822c\u6703\u6709\u4e00\u500b\u6700\u9069\u7528\u7684\u7b56\u7565\u5c0d\u8c61\uff0c\u53ea\u6709\u5728\u5c0d\u8c61\u56e0\u70ba\u67d0\u4e9b\u539f\u56e0\uff0c\u5c0e\u81f4\u5176\u6574\u4e00\u5957\u884c\u70ba\u908f\u8f2f\u9700\u8981\u6539\u8b8a\u6642\uff0c\u624d\u6703\u8a2d\u7f6e\u4e00\u500b\u65b0\u7684\u7b56\u7565\u5c0d\u8c61\uff0c\u76f8\u5c0d\u4f86\u8aaa\u66f4\u300c\u5b8f\u89c0\u300d<\/li><\/ul><\/li><li>\u72c0\u614b\u6a21\u5f0f\u662f\u70ba\u4e86\u89e3\u6c7a\u539f\u672c\u8b93\u5c0d\u8c61\u5728\u4e0d\u540c\u72c0\u614b\u4e0b\u57f7\u884c\u4e0d\u540c\u884c\u70ba\uff0c\u5f9e\u800c\u4f7f\u7528\u5927\u91cf\u7684if-else\u5224\u65b7\u8a9e\u53e5\uff0c\u5c0e\u81f4\u4ee3\u78bc\u96e3\u4ee5\u7dad\u8b77\u800c\u51fa\u73fe\u7684\u66ff\u4ee3\u65b9\u6848<ul><li>\u6240\u4ee5\uff0c\u5c0d\u8c61\u7e3d\u9ad4\u7684\u884c\u70ba\u908f\u8f2f\u6c92\u6709\u6539\u8b8a\uff0c\u53ea\u662f\u8b93\u5c0d\u8c61\u53ef\u4ee5\u901a\u904e\u7c21\u55ae\u5730\u5207\u63db\u72c0\u614b\u5c0d\u8c61\u4f86\u5207\u63db\u884c\u70ba\uff0c\u76f8\u5c0d\u4f86\u8aaa\u66f4\u300c\u5fae\u89c0\u300d<\/li><\/ul><\/li><\/ul><\/li><\/ul>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-dcdaba2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"dcdaba2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-782bee8\" data-id=\"782bee8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3001c1e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3001c1e\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-439a7d9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"439a7d9\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a37cd7a\" data-id=\"a37cd7a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-67e381c elementor-widget elementor-widget-text-editor\" data-id=\"67e381c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<h4 class=\"md-end-block md-heading\"><span style=\"text-decoration: underline;\"><strong><span class=\"md-plain md-expand\">\u53c3\u8003\u66f8\u76ee<\/span><\/strong><\/span><\/h4><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item md-focus-container\">\u300aHead First Design Patterns\u300bEric Freeman, Elisabeth Robson, Kathy Sierra, Bert Bates<\/li><\/ul>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u4e0a\u4e0b\u6587\u5c0d\u8c61\u5728\u6301\u7e8c\u8b8a\u63db\u7684\u72c0\u614b\u4e2d\uff0c\u6839\u64da\u4e0d\u540c\u7684\u72c0\u614b\u5be6\u73fe\u4e0d\u540c\u7684\u884c\u70ba<\/p>\n","protected":false},"author":1,"featured_media":947,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,26,18],"tags":[],"class_list":["post-2625","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-reading-notes","category-design-patterns","category-developing"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/lonelinerd.com\/wp-content\/uploads\/2021\/03\/FeatureCover_ReadingNotes.png","_links":{"self":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts\/2625","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/comments?post=2625"}],"version-history":[{"count":20,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts\/2625\/revisions"}],"predecessor-version":[{"id":2908,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts\/2625\/revisions\/2908"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/media\/947"}],"wp:attachment":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/media?parent=2625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/categories?post=2625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/tags?post=2625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}