{"id":4221,"date":"2025-05-31T11:27:47","date_gmt":"2025-06-05T04:24:47","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4221"},"modified":"2025-06-05T11:27:47","modified_gmt":"2025-06-05T04:24:47","slug":"%e5%ad%b8%e7%bf%92swift%e4%b8%ad%e7%9a%84for-in%e8%aa%9e%e5%8f%a5%ef%bc%9a%e8%a7%a3%e6%b1%ba%e3%80%8cexpectedinfor-instatement%e3%80%8d%e9%8c%af%e8%aa%a4-4","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/%e5%ad%b8%e7%bf%92swift%e4%b8%ad%e7%9a%84for-in%e8%aa%9e%e5%8f%a5%ef%bc%9a%e8%a7%a3%e6%b1%ba%e3%80%8cexpectedinfor-instatement%e3%80%8d%e9%8c%af%e8%aa%a4-4\/","title":{"rendered":"\u6df1\u5165\u5b78\u7fd2 Swift \u7684 for-in \u8a9e\u53e5\uff1a\u89e3\u6c7a\u300cExpected ‘;’ in for-in statement\u300d\u932f\u8aa4\u8207\u6700\u4f73\u5be6\u8e10"},"content":{"rendered":"

<\/p>\n

\u6df1\u5165\u89e3\u6790 Swift \u932f\u8aa4\uff1aExpected ‘;’ in for-in statement<\/h1>\n

Swift \u662f\u4e00\u7a2e\u529f\u80fd\u5f37\u5927\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u4f46\u5728\u7de8\u5beb\u4ee3\u78bc\u6642\uff0c\u6211\u5011\u7d93\u5e38\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u3002\u5176\u4e2d\uff0c\u300cExpected ‘;’ in for-in statement\u300d\u662f Swift \u7de8\u8b6f\u5668\u5e38\u898b\u7684\u932f\u8aa4\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u6df1\u5165\u89e3\u6790\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u5f0f\uff0c\u4e26\u63d0\u4f9b\u5be6\u4f5c\u7bc4\u4f8b\u53ca\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u300cExpected ‘;’ in for-in statement\u300d\u932f\u8aa4\uff1f<\/h2>\n

\u300cExpected ‘;’ in for-in statement\u300d\u932f\u8aa4\u662f Swift \u7de8\u8b6f\u5668\u5728\u906d\u9047\u8a9e\u6cd5\u554f\u984c\u6642\u986f\u793a\u7684\u932f\u8aa4\u8a0a\u606f\u3002\u9019\u8868\u793a\u5728 for-in \u8a9e\u53e5\u7684\u7d50\u5c3e\uff0c\u7de8\u8b6f\u5668\u9810\u671f\u627e\u5230\u4e00\u500b\u5206\u865f\uff08;\uff09\uff0c\u4f46\u5be6\u969b\u4e0a\u537b\u6c92\u6709\u627e\u5230\u3002<\/p>\n

\u70ba\u4ec0\u9ebc\u6703\u51fa\u73fe\u300cExpected ‘;’ in for-in statement\u300d\u932f\u8aa4\uff1f<\/h2>\n

\u5728 Swift \u4e2d\uff0cfor-in \u8a9e\u53e5\u7684\u7d50\u69cb\u4e26\u4e0d\u9700\u8981\u4ee5\u5206\u865f\u7d50\u5c3e\uff0c\u9019\u662f\u8a31\u591a\u521d\u5b78\u8005\u7684\u8aa4\u89e3\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u7684\u539f\u56e0\u662f\uff1a<\/p>\n

1. **\u4e0d\u6b63\u78ba\u7684\u8a9e\u6cd5\u4f7f\u7528**\uff1a\u53ef\u80fd\u5728\u5176\u4ed6\u5730\u65b9\u4e0d\u5c0f\u5fc3\u4f7f\u7528\u4e86\u5206\u865f\uff0c\u5c0e\u81f4\u7de8\u8b6f\u5668\u5728\u89e3\u6790\u6642\u51fa\u73fe\u932f\u8aa4\u3002
\n2. **\u4ee3\u78bc\u7d50\u69cb\u554f\u984c**\uff1a\u5982\u7f3a\u5c11\u5927\u62ec\u865f\u6216\u8a9e\u6cd5\u4e0d\u5b8c\u6574\u3002<\/p>\n

\u5982\u4f55\u89e3\u6c7a\u300cExpected ‘;’ in for-in statement\u300d\u932f\u8aa4\uff1f<\/h2>\n

\u89e3\u6c7a\u9019\u500b\u932f\u8aa4\u7684\u95dc\u9375\u5728\u65bc\u6b63\u78ba\u7406\u89e3 for-in \u8a9e\u53e5\u7684\u7d50\u69cb\u3002\u5be6\u969b\u4e0a\uff0c\u5728 Swift \u4e2d\uff0cfor-in \u8a9e\u53e5\u4e0d\u9700\u8981\u5728\u7d50\u5c3e\u52a0\u5165\u5206\u865f\u3002\u4ee5\u4e0b\u662f\u6b63\u78ba\u7528\u6cd5\u7684\u7bc4\u4f8b\uff1a<\/p>\n

“`swift
\nlet array = [“Apple”, “Banana”, “Cherry”]\n

for item in array {
\n print(item)
\n}
\n“`<\/p>\n

\u5982\u4e0a\u6240\u793a\uff0cfor-in \u8a9e\u53e5\u7684\u7d50\u5c3e\u4e0d\u9700\u8981\u5206\u865f\u3002\u82e5\u4f60\u5728\u4f7f\u7528\u904e\u7a0b\u4e2d\u4ecd\u7136\u9047\u5230\u6b64\u932f\u8aa4\uff0c\u8acb\u6aa2\u67e5\u6574\u9ad4\u4ee3\u78bc\u7d50\u69cb\uff0c\u78ba\u4fdd\u6c92\u6709\u5176\u4ed6\u8a9e\u6cd5\u554f\u984c\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664\u5efa\u8b70<\/h2>\n

1. **\u6aa2\u67e5\u8a9e\u6cd5\u7d50\u69cb**\uff1a\u78ba\u4fdd\u6240\u6709\u7684\u62ec\u865f\u548c\u5927\u62ec\u865f\u90fd\u6b63\u78ba\u914d\u5c0d\u3002
\n2. **\u78ba\u8a8d\u4ee3\u78bc\u7bc4\u570d**\uff1a\u5982\u679c\u4f60\u5728 for-in \u8a9e\u53e5\u5167\u90e8\u4f7f\u7528\u4e86\u5176\u4ed6\u8a9e\u6cd5\uff0c\u8acb\u78ba\u4fdd\u9019\u4e9b\u8a9e\u6cd5\u6b63\u78ba\u7121\u8aa4\u3002
\n3. **\u4f7f\u7528 Xcode \u7684\u5373\u6642\u932f\u8aa4\u63d0\u793a**\uff1aXcode \u53ef\u4ee5\u5e6b\u52a9\u4f60\u53ca\u6642\u767c\u73fe\u8a9e\u6cd5\u932f\u8aa4\uff0c\u5efa\u8b70\u5145\u5206\u5229\u7528\u9019\u4e00\u529f\u80fd\u3002<\/p>\n

\u5ef6\u4f38\u61c9\u7528\uff1afor-in \u8a9e\u53e5\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n

for-in \u8a9e\u53e5\u5728 Swift \u4e2d\u7528\u9014\u5ee3\u6cdb\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u5efa\u8b70\uff1a<\/p>\n

1. **\u4f7f\u7528\u66f4\u5177\u63cf\u8ff0\u6027\u7684\u8b8a\u6578\u540d**\uff1a\u4f8b\u5982\uff0c\u4e0d\u50c5\u4f7f\u7528 `item`\uff0c\u800c\u662f\u4f7f\u7528 `fruit` \u4f86\u8b93\u4ee3\u78bc\u66f4\u5177\u53ef\u8b80\u6027\u3002
\n2. **\u7d50\u5408\u5176\u4ed6\u8a9e\u6cd5**\uff1a\u5982\u4f7f\u7528 `if` \u6216 `switch` \u4f86\u9032\u4e00\u6b65\u8655\u7406\u6578\u64da\u3002<\/p>\n

“`swift
\nfor fruit in array {
\n if fruit == “Banana” {
\n print(“I found a banana!”)
\n } else {
\n print(fruit)
\n }
\n}
\n“`<\/p>\n

\u7e3d\u7d50<\/h2>\n

\u300cExpected ‘;’ in for-in statement\u300d\u932f\u8aa4\u4e26\u4e0d\u662f\u56e0\u70ba\u5206\u865f\u7684\u7f3a\u5931\uff0c\u800c\u662f\u8a9e\u6cd5\u7d50\u69cb\u7684\u554f\u984c\u3002\u4e86\u89e3\u6b63\u78ba\u7684\u8a9e\u6cd5\u7d50\u69cb\u548c\u4ee3\u78bc\u908f\u8f2f\u5c07\u6709\u52a9\u65bc\u907f\u514d\u985e\u4f3c\u932f\u8aa4\u3002<\/p>\n

Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n

Q: \u70ba\u4ec0\u9ebc Swift \u7684 for-in \u8a9e\u53e5\u4e0d\u9700\u8981\u5206\u865f\uff1f<\/h3>\n

A: \u5728 Swift \u4e2d\uff0cfor-in \u8a9e\u53e5\u7684\u7d50\u5c3e\u4e0d\u9700\u8981\u5206\u865f\uff0c\u9019\u662f\u8207\u5176\u4ed6\u8a9e\u8a00\u4e0d\u540c\u7684\u8a2d\u8a08\uff0c\u76ee\u7684\u662f\u8b93\u8a9e\u6cd5\u66f4\u7c21\u6f54\u6613\u8b80\u3002<\/p>\n

Q: \u5982\u4f55\u77e5\u9053\u6211\u7684\u8a9e\u6cd5\u932f\u8aa4\u662f\u4ec0\u9ebc\uff1f<\/h3>\n

A: \u4f7f\u7528 Xcode \u7b49 IDE \u53ef\u4ee5\u63d0\u4f9b\u5373\u6642\u7684\u8a9e\u6cd5\u6aa2\u67e5\uff0c\u5e6b\u52a9\u4f60\u5feb\u901f\u5b9a\u4f4d\u932f\u8aa4\u3002<\/p>\n

Q: \u9664\u4e86 for-in \u8a9e\u53e5\uff0cSwift \u4e2d\u9084\u6709\u54ea\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\uff1f<\/h3>\n

A: \u5e38\u898b\u932f\u8aa4\u5305\u62ec\u300cType Mismatch\u300d\u3001\u300cUse of unresolved identifier\u300d\u7b49\uff0c\u9019\u4e9b\u932f\u8aa4\u901a\u5e38\u8207\u8b8a\u6578\u985e\u578b\u6216\u7bc4\u570d\u6709\u95dc\u3002<\/p>\n

—<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39Swift\u4e2d\u7684for-in\u8a9e\u53e5\uff0c\u4e26\u8a73\u7d30\u89e3\u91cb\u5982\u4f55\u89e3\u6c7a\u300cExpected’;’infor-instatement\u300d\u932f\u8aa4\u3002\u8b80\u8005\u5c07\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528for-in\u8a9e\u53e5\uff0c\u4ee5\u53ca\u5982\u4f55\u907f\u514d\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[174,5],"tags":[173,9],"class_list":["post-4221","post","type-post","status-publish","format-standard","hentry","category-ios","category-swift","tag-ios","tag-swift"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-165","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=4221"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4221\/revisions"}],"predecessor-version":[{"id":4222,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4221\/revisions\/4222"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=4221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=4221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=4221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}