{"id":215,"date":"2015-12-03T23:32:37","date_gmt":"2015-12-03T15:32:37","guid":{"rendered":"http:\/\/blog.droidking.com\/?p=215"},"modified":"2015-12-03T23:33:28","modified_gmt":"2015-12-03T15:33:28","slug":"swift%e4%b8%ad%e7%9a%84%e6%9d%a1%e4%bb%b6%e7%bc%96%e8%af%91","status":"publish","type":"post","link":"http:\/\/droidking.com\/?p=215","title":{"rendered":"Swift\u4e2d\u7684\u6761\u4ef6\u7f16\u8bd1"},"content":{"rendered":"<p>\u5728Swift\u4e2d\u53ef\u4ee5\u4f7f\u7528#if....#else...#endif\u6765\u8fdb\u884c\u6761\u4ef6\u7f16\u8bd1\uff0c\u6bd4\u5982\uff1a<\/p>\n<pre class=\"default prettyprint prettyprinted\"><code><span class=\"com\">#if DEBUG<\/span>\r\n    <span class=\"kwd\">let<\/span><span class=\"pln\"> a <\/span><span class=\"pun\">=<\/span> <span class=\"lit\">0<\/span>\r\n<span class=\"com\">#else<\/span>\r\n    <span class=\"kwd\">let<\/span><span class=\"pln\"> a <\/span><span class=\"pun\">=<\/span> <span class=\"lit\">1<\/span>\r\n<span class=\"com\">#endif<\/span><\/code><\/pre>\n<p>\u4f46\u662f\u548cObj-C\u4e2d\u4e0d\u540c\uff0c\u4e0d\u80fd\u76f4\u63a5\u4f7f\u7528Preprocessor Macros\u4e2d\u5b9a\u4e49\u7684\u5b8f\uff08DEBUG=1\uff09\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p id=\"jnXRByY\"><img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"195\" class=\"alignnone size-full wp-image-217 \" src=\"http:\/\/blog.droidking.com\/wp-content\/uploads\/2015\/12\/img_56605e9387c2f.png\" alt=\"\" srcset=\"http:\/\/droidking.com\/wp-content\/uploads\/2015\/12\/img_56605e9387c2f.png 540w, http:\/\/droidking.com\/wp-content\/uploads\/2015\/12\/img_56605e9387c2f-300x108.png 300w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><\/p>\n<p><!--more--><\/p>\n<p>\u5fc5\u987b\u5728\u5bf9\u5e94\u7684Target\u7684Swift Compiler\u4e2d\u4f7f\u7528-D\u6765\u5b9a\u4e49\uff0c\u6bd4\u5982-DDEBUG\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002\u6ce8\u610f\uff1a\u548cObj-C\u4e0d\u540c\uff0cSwift\u4e0d\u80fd\u4f7f\u7528-DDEBUG=1\u7684\u65b9\u5f0f\u6765\u5b9a\u4e49\u5b8f\uff0c\u5426\u5219\u7f16\u8bd1\u5668\u65e0\u6cd5\u8bc6\u522b\u3002<\/p>\n<p id=\"RnxdKzv\"><img loading=\"lazy\" decoding=\"async\" width=\"531\" height=\"118\" class=\"alignnone size-full wp-image-216 \" src=\"http:\/\/blog.droidking.com\/wp-content\/uploads\/2015\/12\/img_56605d971471a.png\" alt=\"\" srcset=\"http:\/\/droidking.com\/wp-content\/uploads\/2015\/12\/img_56605d971471a.png 531w, http:\/\/droidking.com\/wp-content\/uploads\/2015\/12\/img_56605d971471a-300x67.png 300w\" sizes=\"auto, (max-width: 531px) 100vw, 531px\" \/><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"215\">\u9605\u8bfb\uff1a38<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Swift\u4e2d\u53ef\u4ee5\u4f7f\u7528#if....#else...#endif\u6765\u8fdb\u884c\u6761\u4ef6\u7f16\u8bd1\uff0c\u6bd4\u5982\uff1a #if DEBUG l &hellip; <a href=\"http:\/\/droidking.com\/?p=215\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">Swift\u4e2d\u7684\u6761\u4ef6\u7f16\u8bd1<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,17,28,5],"tags":[],"class_list":["post-215","post","type-post","status-publish","format-standard","hentry","category-ios","category-os-x","category-swift","category-5"],"_links":{"self":[{"href":"http:\/\/droidking.com\/index.php?rest_route=\/wp\/v2\/posts\/215","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/droidking.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/droidking.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/droidking.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/droidking.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=215"}],"version-history":[{"count":2,"href":"http:\/\/droidking.com\/index.php?rest_route=\/wp\/v2\/posts\/215\/revisions"}],"predecessor-version":[{"id":220,"href":"http:\/\/droidking.com\/index.php?rest_route=\/wp\/v2\/posts\/215\/revisions\/220"}],"wp:attachment":[{"href":"http:\/\/droidking.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/droidking.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=215"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/droidking.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}