{"id":3889,"date":"2025-06-01T10:57:17","date_gmt":"2025-06-05T03:44:17","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3889"},"modified":"2025-06-05T10:57:17","modified_gmt":"2025-06-05T03:44:17","slug":"%e5%ad%b8%e7%bf%92swift%e4%b8%ad%e7%9a%84%e6%b3%9b%e5%9e%8b%ef%bc%9a%e5%ae%9a%e7%be%a9%e5%87%bd%e6%95%b8%e3%80%81%e7%a8%ae%e9%a1%9e%e3%80%81%e6%9e%9a%e8%88%89%e7%ad%89","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/%e5%ad%b8%e7%bf%92swift%e4%b8%ad%e7%9a%84%e6%b3%9b%e5%9e%8b%ef%bc%9a%e5%ae%9a%e7%be%a9%e5%87%bd%e6%95%b8%e3%80%81%e7%a8%ae%e9%a1%9e%e3%80%81%e6%9e%9a%e8%88%89%e7%ad%89\/","title":{"rendered":"\u6df1\u5165\u63a2\u7d22 Swift \u4e2d\u7684\u6cdb\u578b\uff1a\u51fd\u6578\u3001\u985e\u578b\u8207\u679a\u8209\u7684\u73fe\u4ee3\u5be6\u4f5c"},"content":{"rendered":"

<\/p>\n

\u6df1\u5165\u63a2\u7d22 Swift \u4e2d\u7684\u6cdb\u578b<\/h1>\n

Swift \u662f\u4e00\u7a2e\u529f\u80fd\u5f37\u5927\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u5b83\u652f\u63f4\u6cdb\u578b\uff0c\u4f7f\u958b\u767c\u8005\u80fd\u5920\u64b0\u5beb\u66f4\u9748\u6d3b\u548c\u53ef\u91cd\u7528\u7684\u7a0b\u5f0f\u78bc\u3002\u5728\u672c\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u5168\u9762\u4ecb\u7d39 Swift \u4e2d\u7684\u6cdb\u578b\uff0c\u5305\u62ec\u5982\u4f55\u5b9a\u7fa9\u6cdb\u578b\u51fd\u6578\u3001\u6cdb\u578b\u985e\u578b\u548c\u6cdb\u578b\u679a\u8209\uff0c\u4e26\u63d0\u4f9b\u6700\u65b0\u7684\u7a0b\u5f0f\u78bc\u7bc4\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u6cdb\u578b\uff1f<\/h2>\n

\u6cdb\u578b\u662f\u4e00\u7a2e\u7a0b\u5f0f\u8a2d\u8a08\u6280\u8853\uff0c\u5141\u8a31\u958b\u767c\u8005\u64b0\u5beb\u4e0d\u4f9d\u8cf4\u65bc\u7279\u5b9a\u985e\u578b\u7684\u7a0b\u5f0f\u78bc\u3002\u9019\u4e0d\u50c5\u63d0\u9ad8\u4e86\u7a0b\u5f0f\u78bc\u7684\u53ef\u91cd\u7528\u6027\uff0c\u9084\u6e1b\u5c11\u4e86\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\uff0c\u4f7f\u5f97\u7a0b\u5f0f\u78bc\u66f4\u52a0\u7c21\u6f54\u548c\u6613\u65bc\u7dad\u8b77\u3002<\/p>\n

\u5982\u4f55\u5b9a\u7fa9\u6cdb\u578b\u51fd\u6578\uff1f<\/h2>\n

\u5b9a\u7fa9\u6cdb\u578b\u51fd\u6578\u7684\u8a9e\u6cd5\u8207\u666e\u901a\u51fd\u6578\u985e\u4f3c\uff0c\u4e3b\u8981\u5340\u5225\u5728\u65bc\u5728\u51fd\u6578\u540d\u7a31\u5f8c\u9762\u6dfb\u52a0\u6cdb\u578b\u6a19\u8a18\u3002\u4ee5\u4e0b\u662f Swift 5.9 \u7684\u7bc4\u4f8b\uff1a<\/p>\n

“`swift
\nfunc swapTwoValues(_ a: inout T, _ b: inout T) {
\n let temporaryA = a
\n a = b
\n b = temporaryA
\n}
\n“`<\/p>\n

\u9019\u500b\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u4ea4\u63db\u5169\u500b\u503c\uff0c\u4e14\u9019\u5169\u500b\u503c\u5fc5\u9808\u662f\u540c\u4e00\u985e\u578b\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4f7f\u5f97\u51fd\u6578\u66f4\u52a0\u9748\u6d3b\uff0c\u9069\u7528\u65bc\u5404\u7a2e\u6578\u64da\u985e\u578b\u7684\u4ea4\u63db\u3002<\/p>\n

\u7bc4\u4f8b\u5be6\u4f5c<\/h3>\n

“`swift
\nvar x = 5
\nvar y = 10
\nswapTwoValues(&x, &y)
\n\/\/ x \u73fe\u5728\u662f 10\uff0c\u800c y \u662f 5
\n“`<\/p>\n

\u5982\u4f55\u5b9a\u7fa9\u6cdb\u578b\u985e\u578b\uff1f<\/h2>\n

\u8207\u666e\u901a\u985e\u578b\u985e\u4f3c\uff0c\u6cdb\u578b\u985e\u578b\u4e5f\u9700\u8981\u5728\u985e\u578b\u540d\u7a31\u5f8c\u52a0\u4e0a\u6cdb\u578b\u6a19\u8a18\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u6700\u65b0\u7684\u5806\u758a\u5be6\u73fe\u7bc4\u4f8b\uff1a<\/p>\n

“`swift
\nstruct Stack {
\n private var items = [Element]()<\/p>\n

mutating func push(_ item: Element) {
\n items.append(item)
\n }<\/p>\n

mutating func pop() -> Element? {
\n return items.isEmpty ? nil : items.removeLast()
\n }<\/p>\n

var isEmpty: Bool {
\n return items.isEmpty
\n }
\n}
\n“`<\/p>\n

\u9019\u500b\u5806\u758a\u985e\u578b\u53ef\u4ee5\u5b58\u5132\u4efb\u4f55\u985e\u578b\u7684\u5143\u7d20\uff0c\u53ea\u8981\u5b83\u5011\u662f\u76f8\u540c\u7684\u985e\u578b\u3002<\/p>\n

\u7bc4\u4f8b\u5be6\u4f5c<\/h3>\n

“`swift
\nvar stackOfInts = Stack()
\nstackOfInts.push(1)
\nstackOfInts.push(2)
\nlet poppedValue = stackOfInts.pop() \/\/ poppedValue \u662f 2
\n“`<\/p>\n

\u5982\u4f55\u5b9a\u7fa9\u6cdb\u578b\u679a\u8209\uff1f<\/h2>\n

\u6cdb\u578b\u679a\u8209\u7684\u5b9a\u7fa9\u8207\u666e\u901a\u679a\u8209\u76f8\u4f3c\uff0c\u4ee5\u4e0b\u662f\u4e00\u500b\u53ef\u9078\u503c\u7684\u679a\u8209\u7bc4\u4f8b\uff1a<\/p>\n

“`swift
\nenum Optional {
\n case none
\n case some(Wrapped)
\n}
\n“`<\/p>\n

\u9019\u500b\u679a\u8209\u63d0\u4f9b\u4e86\u4e00\u7a2e\u8868\u793a\u53ef\u80fd\u7f3a\u5c11\u503c\u7684\u65b9\u5f0f\uff0c\u4e26\u4e14\u53ef\u4ee5\u7528\u65bc\u4efb\u4f55\u985e\u578b\u7684\u5305\u88dd\u3002<\/p>\n

\u7bc4\u4f8b\u5be6\u4f5c<\/h3>\n

“`swift
\nlet optionalInt: Optional = .some(42)
\nlet optionalString: Optional = .none
\n“`<\/p>\n

\u932f\u8aa4\u6392\u9664\u8207\u6700\u4f73\u5be6\u8e10<\/h2>\n

\u5728\u4f7f\u7528\u6cdb\u578b\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\uff0c\u4f8b\u5982\u985e\u578b\u4e0d\u5339\u914d\u6216\u4f7f\u7528\u4e0d\u7576\u7684\u7d04\u675f\u3002\u78ba\u4fdd\u5728\u5b9a\u7fa9\u51fd\u6578\u6216\u985e\u578b\u6642\u6b63\u78ba\u6307\u5b9a\u6cdb\u578b\u7d04\u675f\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u8a31\u591a\u6f5b\u5728\u7684\u932f\u8aa4\u3002<\/p>\n

\u7e3d\u7d50<\/h2>\n

\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u6df1\u5165\u63a2\u8a0e\u4e86 Swift \u4e2d\u7684\u6cdb\u578b\uff0c\u5305\u62ec\u6cdb\u578b\u51fd\u6578\u3001\u985e\u578b\u548c\u679a\u8209\u7684\u5b9a\u7fa9\u53ca\u5be6\u4f5c\u3002\u6cdb\u578b\u6280\u8853\u4e0d\u50c5\u80fd\u63d0\u9ad8\u7a0b\u5f0f\u78bc\u7684\u91cd\u7528\u6027\uff0c\u9084\u80fd\u4f7f\u7a0b\u5f0f\u78bc\u66f4\u52a0\u7c21\u6f54\u548c\u9ad8\u6548\u3002\u82e5\u8981\u9032\u4e00\u6b65\u4e86\u89e3 Swift \u4e2d\u7684\u6cdb\u578b\uff0c\u5efa\u8b70\u53c3\u8003 Swift \u8a9e\u8a00\u6307\u5357\u4e2d\u7684\u6cdb\u578b\u7ae0\u7bc0<\/a>\u3002<\/p>\n

\u5e38\u898b\u554f\u984c\u89e3\u7b54 (Q&A)<\/h2>\n

Q1: \u6cdb\u578b\u7684\u4e3b\u8981\u512a\u52e2\u662f\u4ec0\u9ebc\uff1f<\/h3>\n

A1: \u6cdb\u578b\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u63d0\u9ad8\u7a0b\u5f0f\u78bc\u7684\u91cd\u7528\u6027\u548c\u9748\u6d3b\u6027\uff0c\u6e1b\u5c11\u91cd\u8907\u4ee3\u78bc\uff0c\u4f7f\u7a0b\u5f0f\u78bc\u66f4\u6613\u65bc\u7dad\u8b77\u3002<\/p>\n

Q2: \u5982\u4f55\u5728\u6cdb\u578b\u51fd\u6578\u4e2d\u4f7f\u7528\u7d04\u675f\uff1f<\/h3>\n

A2: \u53ef\u4ee5\u4f7f\u7528 where \u95dc\u9375\u5b57\u4f86\u6307\u5b9a\u6cdb\u578b\u53c3\u6578\u7684\u7d04\u675f\uff0c\u4f8b\u5982 `func someFunction(…)` \u8868\u793a T \u5fc5\u9808\u7b26\u5408 Equatable \u5354\u8b70\u3002<\/p>\n

Q3: \u6cdb\u578b\u80fd\u5426\u8207\u5354\u8b70\u7d50\u5408\u4f7f\u7528\uff1f<\/h3>\n

A3: \u662f\u7684\uff0c\u6cdb\u578b\u53ef\u4ee5\u8207\u5354\u8b70\u7d50\u5408\u4f7f\u7528\uff0c\u9019\u6a23\u53ef\u4ee5\u5275\u5efa\u66f4\u9748\u6d3b\u548c\u53ef\u64f4\u5c55\u7684\u7a0b\u5f0f\u78bc\u67b6\u69cb\u3002<\/p>\n

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

\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39Swift\u4e2d\u7684\u6cdb\u578b\uff0c\u5305\u62ec\u5982\u4f55\u5b9a\u7fa9\u6cdb\u578b\u51fd\u6578\u3001\u6cdb\u578b\u985e\u578b\u3001\u6cdb\u578b\u679a\u8209\u7b49\uff0c\u8b93\u8b80\u8005\u80fd\u5920\u66f4\u52a0\u4e86\u89e3Swift\u4e2d\u7684\u6cdb\u578b\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-3889","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\/pcFK27-10J","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3889","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=3889"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3889\/revisions"}],"predecessor-version":[{"id":3890,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3889\/revisions\/3890"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=3889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}