{"id":4898,"date":"2018-06-21T14:18:36","date_gmt":"2018-06-21T06:18:36","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=4898"},"modified":"2018-06-22T08:03:04","modified_gmt":"2018-06-22T00:03:04","slug":"%e6%97%a5%e7%a7%af%e6%9c%88%e7%b4%af-20180622forward-%e5%85%b3%e9%94%ae%e5%ad%97","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=4898","title":{"rendered":"[\u65e5\u79ef\u6708\u7d2f]-20180622:\u524d\u5411\u58f0\u660e\u5173\u952e\u5b57 forward"},"content":{"rendered":"<div id=\"globalWrapper\">\n<div id=\"column-content\">\n<div id=\"content\">\n<div id=\"bodyContent\" class=\"mw-body\">\n<div id=\"mw-content-text\" class=\"mw-content-ltr\" dir=\"ltr\" lang=\"en\">\n<h4>\u3010\u683c\u5f0f\u3011<\/h4>\n<blockquote><p>\u51fd\u6570\u58f0\u660e;forward;<\/p><\/blockquote>\n<h4>\u3010\u7528\u9014\u3011<\/h4>\n<p>forward \u5173\u952e\u5b57\u7528\u4e8e\u524d\u5411\u58f0\u660e\u4e00\u4e2a\u5c40\u90e8\u51fd\u6570\uff0c\u6bd4\u5982:<\/p>\n<pre class=\"lang:delphi decode:true \"> function Calculate(X, Y: Integer): Real; forward;<\/pre>\n<p>\u58f0\u660e\u4e86\u4e00\u4e2a <span class=\"codeInline\">Calculate \u51fd\u6570\uff0c\u90a3\u4e48\u540e\u9762\u5fc5\u9700\u91cd\u65b0\u58f0\u660e\u5e76\u5b9e\u73b0\u8fd9\u4e2a\u51fd\u6570\uff0c\u7c7b\u4f3c\u4e8e\u4e0b\u9762:<\/span><\/p>\n<pre class=\"lang:delphi decode:true \">function Calculate;\r\n   ... { declarations }\r\n begin\r\n   ... { statement block }\r\n end;<\/pre>\n<p>\u51fd\u6570\u7684\u5b9e\u73b0\u90e8\u5206\uff0c\u53c2\u6570\u53ef\u4ee5\u7701\u7565\uff0c\u4f46\u5982\u679c\u4e0d\u7701\u7565\uff0c\u5219\u5fc5\u9700\u4e0e\u524d\u5411\u58f0\u660e\u4e2d\u7684\u5b8c\u5168\u4e00\u81f4\uff08\u4e0d\u5305\u542b\u9ed8\u8ba4\u503c\uff09\u3002<\/p>\n<p>\u524d\u5411\u58f0\u660e\u7684\u4e3b\u8981\u7528\u9014\u662f\u7528\u4e8e\u5904\u7406\u5faa\u73af\u5f15\u7528\u7684\u95ee\u9898\uff0c\u6bd4\u5982\u51fd\u6570 A \u8c03\u7528\u4e86\u51fd\u6570 B\uff0c\u800c\u51fd\u6570 B \u53c8\u8c03\u7528\u4e86\u51fd\u6570 A \u7684\u60c5\u51b5\u3002\u5b83\u4e00\u822c\u7528\u5728 implementation \u5c0f\u8282\u5185\u90e8\uff0c\u5982\u679c\u51fd\u6570 A\/B \u662f\u5728 interface \u90e8\u5206\u90fd\u58f0\u660e\u4e86\u7684\u8bdd\uff0c\u4e0d\u9700\u8981\u7528 forward \u8bed\u6cd5\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u683c\u5f0f\u3011 \u51fd\u6570\u58f0\u660e;forward; \u3010 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[603],"tags":[],"class_list":["post-4898","post","type-post","status-publish","format-standard","hentry","category-603"],"views":2188,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/4898","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4898"}],"version-history":[{"count":6,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/4898\/revisions"}],"predecessor-version":[{"id":4904,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/4898\/revisions\/4904"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}