{"id":518,"date":"2018-02-23T23:38:57","date_gmt":"2018-02-23T15:38:57","guid":{"rendered":"http:\/\/60.205.208.74\/2018\/02\/23\/swift-ifelse-ifelse-%e8%af%ad%e5%8f%a5\/"},"modified":"2018-02-23T23:38:57","modified_gmt":"2018-02-23T15:38:57","slug":"swift-ifelse-ifelse-%e8%af%ad%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/www.puzi7.net\/?p=518","title":{"rendered":"Swift if\u2026else if\u2026else \u8bed\u53e5"},"content":{"rendered":"<span itemprop=\"description\"><div class=\"article-body\">\n<div class=\"article-intro\" id=\"content\">\n<h1>Swift <span class=\"color_h1\">if&#8230;else if&#8230;else \u8bed\u53e5<\/span><\/h1>\n<p><a href=\"\/swift-decision-making.html\"><img decoding=\"async\" class=\"navup\" src=\"\/images\/up.gif\" alt=\"Swift \u6761\u4ef6\u8bed\u53e5\">Swift \u6761\u4ef6\u8bed\u53e5<\/a><\/p>\n<p>\u4e00\u4e2a <b>if \u8bed\u53e5<\/b> \u540e\u53ef\u8ddf\u4e00\u4e2a\u53ef\u9009\u7684 <b>else if&#8230;else \u8bed\u53e5<\/b>\uff0c<b>else if&#8230;else \u8bed\u53e5<\/b> \u5728\u6d4b\u8bd5\u591a\u4e2a\u6761\u4ef6\u8bed\u53e5\u65f6\u662f\u975e\u5e38\u6709\u7528\u7684\u3002<\/p>\n<p>\n\u5f53\u4f60\u4f7f\u7528  if , else if , else \u8bed\u53e5\u65f6\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul class=\"list\">\n<li>if \u8bed\u53e5\u540e\u53ef\u4ee5\u6709 0 \u4e2a\u6216  1 \u4e2a else\uff0c\u4f46\u662f\u5982\u679c \u6709 else if \u8bed\u53e5\uff0celse \u8bed\u53e5\u9700\u8981\u5728 else if \u8bed\u53e5\u4e4b\u540e\u3002<\/li>\n<li>if \u8bed\u53e5\u540e\u53ef\u4ee5\u6709 0 \u4e2a\u6216\u591a\u4e2a  else if \u8bed\u53e5\uff0celse if \u8bed\u53e5\u5fc5\u987b\u5728 else \u8bed\u53e5\u51fa\u73b0\u4e4b\u524d\u3002<\/li>\n<li>\u4e00\u65e6 else \u8bed\u53e5\u6267\u884c\u6210\u529f\uff0c\u5176\u4ed6\u7684 else if \u6216 else \u8bed\u53e5\u90fd\u4e0d\u4f1a\u6267\u884c\u3002<\/li>\n<\/ul>\n<hr>\n<h2>\u8bed\u6cd5<\/h2>\n<pre>\nif boolean_expression_1 {\n   \/* \u5982\u679c boolean_expression_1 \u8868\u8fbe\u5f0f\u4e3a true \u5219\u6267\u884c\u8be5\u8bed\u53e5 *\/\n} else if boolean_expression_2 {\n   \/* \u5982\u679c boolean_expression_2 \u8868\u8fbe\u5f0f\u4e3a true \u5219\u6267\u884c\u8be5\u8bed\u53e5 *\/\n} else if boolean_expression_3 {\n   \/* \u5982\u679c boolean_expression_3 \u8868\u8fbe\u5f0f\u4e3a true \u5219\u6267\u884c\u8be5\u8bed\u53e5 *\/\n} else {\n   \/* \u5982\u679c\u4ee5\u4e0a\u6240\u6709\u6761\u4ef6\u8868\u8fbe\u5f0f\u90fd\u4e0d\u4e3a true \u5219\u6267\u884c\u8be5\u8bed\u53e5 *\/\n}\n<\/pre>\n<h3>\u5b9e\u4f8b<\/h3>\n<pre>\nimport Cocoa\n\nvar varA:Int = 100;\n\n\/* \u68c0\u6d4b\u5e03\u5c14\u6761\u4ef6 *\/\nif varA == 20 {\n    \/* \u5982\u679c\u6761\u4ef6\u4e3a true \u6267\u884c\u4ee5\u4e0b\u8bed\u53e5 *\/\n    print(\"varA \u7684\u503c\u4e3a 20\");\n} else if varA == 50 {\n    \/* \u5982\u679c\u6761\u4ef6\u4e3a true \u6267\u884c\u4ee5\u4e0b\u8bed\u53e5 *\/\n    print(\"varA \u7684\u503c\u4e3a 50\");\n} else {\n    \/* \u5982\u679c\u4ee5\u4e0a\u6761\u4ef6\u90fd\u4e3a false \u6267\u884c\u4ee5\u4e0b\u8bed\u53e5 *\/\n    print(\"\u6ca1\u6709\u5339\u914d\u6761\u4ef6\");\n}\nprint(\"varA \u53d8\u91cf\u7684\u503c\u4e3a \\(varA)\");\n<\/pre>\n<p>\u5f53\u4e0a\u9762\u7684\u4ee3\u7801\u88ab\u7f16\u8bd1\u6267\u884c\u65f6\uff0c\u5b83\u4f1a\u4ea7\u751f\u4e0b\u5217\u7ed3\u679c\uff1a<\/p>\n<pre>\n\u6ca1\u6709\u5339\u914d\u6761\u4ef6\nvarA \u53d8\u91cf\u7684\u503c\u4e3a 100\n<\/pre>\n<p><a href=\"\/swift-decision-making.html\"><img decoding=\"async\" class=\"navup\" src=\"\/images\/up.gif\" alt=\"Swift \u6761\u4ef6\u8bed\u53e5\">Swift \u6761\u4ef6\u8bed\u53e5<\/a><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<span>","protected":false},"excerpt":{"rendered":"<p class=\"excerpt\"><span itemprop=\"description\">Swift if&#8230;else if&#8230;else \u8bed\u53e5 Swift \u6761\u4ef6&hellip;<\/span><\/p>\n<p class=\"more-link-p btn-align-right\"><a class=\"green zoom-btn\" href=\"https:\/\/www.puzi7.net\/?p=518\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,28],"tags":[74,119],"class_list":["post-518","post","type-post","status-publish","format-standard","hentry","category-mobile","category-swift","tag-ios","tag-swift","zoom-theme-has-thumb"],"_links":{"self":[{"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/posts\/518","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=518"}],"version-history":[{"count":0,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/posts\/518\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.puzi7.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}