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\n\u6bd5\u4e1a\u4e00\u5e74\uff0c\u5728\u76db\u5927\u5de5\u4f5c\u3002\u5de5\u4f5c\u4e2d\u4f7f\u7528Windows\u4e3a\u4e3b\uff0c\u5f00\u53d1\uff0c\u8fd0\u7ef4\uff0c\u670d\u52a1\u5668\u90fd\u4f7f\u7528Windows\uff0c\u53ef\u6211\u89c9\u5f97\u81ea\u5df1\u8fd8\u662f\u559c\u6b22\u73a9\u547d\u4ee4\u884c\uff0c\u559c\u6b22linux\uff0c\u4e1a\u4f59\u65f6\u95f4\u81ea\u5df1\u4e5f\u5728\u770b\u4e66\uff0c\u5b66\u4e60\uff0c\u4f46\u662f\u4e5f\u6ca1\u5565\u6210\u5c31\u3002\u8bf7\u95ee\uff0c\u6211\u8fd9\u6837\u575a\u6301\u4e0b\u53bb\u5bf9\u672c\u804c\u5de5\u4f5c\u4e5f\u6ca1\u5565\u7528\uff08\u4e4b\u524d\u76ee\u524d\u662f\uff09\uff0c\u8bf7\u7ed9\u70b9\u5efa\u8bae\u5427\uff1f<\/p>\n<\/blockquote>\n
\u6211\u89c9\u5f97\u8fd9\u4fe9\u95ee\u9898\u7684\u5171\u6027\u662f\uff0c\u5bf9\u73b0\u72b6\u4e0d\u6ee1\u610f\uff0c\u4e1a\u4f59\u65f6\u95f4\u5b66\u4e86\u70b9\u5176\u4ed6\u6280\u672f\uff0c\u4f46\u65e0\u6cd5\u505a\u51fa\u6539\u53d8\u3002\u4e4b\u524d\u6211\u63d0\u5230\u8fc7\u300a\u57ce\u4e2d\u5927\u76d7\u300b\u91cc\u7684\u4e00\u53e5\u53f0\u8bcd\uff0c\u300c\u4f60\u77e5\u9053\u5417\uff0c\u4eba\u4eec\u6bcf\u5929\u8d77\u5e8a\uff0c\u505a\u7740\u540c\u6837\u7684\u4e8b\u60c5\uff0c\u4ed6\u4eec\u544a\u8bc9\u81ea\u5df1\uff0c\u6709\u4e00\u5929\u8981\u6539\u53d8\u751f\u6d3b\uff0c\u4f46\u4ed6\u4eec\u4ece\u6765\u4e0d\u4ed8\u8bf8\u884c\u52a8\u3002\u6211\u60f3\u6539\u53d8\u81ea\u5df1\u7684\u751f\u6d3b\u300d\u3002\u60f3\u8981\u6539\u53d8\u751f\u6d3b\uff0c\u5c31\u8981\u4ed8\u8bf8\u884c\u52a8\uff0c\u6ca1\u6709\u66f4\u76f4\u63a5\u7684\u5efa\u8bae\u4e86\u3002 \u6211\u60f3\u8fd9\u4e24\u4f4d\u8bfb\u8005\u90fd\u662f\u300c80\u975e\u5e38\u540e\u300d\uff0c20\u90ce\u5f53\u5c81\uff0c\u6709\u60f3\u6cd5\u6709\u6fc0\u60c5\u6709\u5927\u628a\u65f6\u95f4\uff0c\u800c\u4e14Nothing to lose\uff0c\u6240\u4ee5\u6211\u7684\u5efa\u8bae\u5c31\u662f\u300c\u5c3d\u5feb\u91cd\u65b0\u5f00\u59cb\u300d\u3002\u60f3\u53bb\u5317\u4eac\u6323\u9996\u4ed8\u7684\uff0c\u8d76\u7d27\u51c6\u5907\u7b80\u5386\u548c\u706b\u8f66\u7968\u3002\u4e0d\u559c\u6b22\u518d\u73a9windows\u7684\uff0c\u4e00\u8fb9\u5b66\u4e60Linux\uff0c\u4e00\u8fb9\u627e\u5de5\u4f5c\u662f\u6b63\u9053\u3002<\/p>\n
\u6709\u65f6\u5019\u4f60\u5fc5\u987b\u91cd\u65b0\u5f00\u59cb\uff0c\u5c31\u662f\u8fd9\u6837\u3002<\/p>\n
\u660e\u5929\u5468\u4e94\uff0c\u6253\u7403\u4f11\u606f\uff01\u6211\u4e0d\u662f\u81ea\u5a92\u4f53\u4eba\uff0c\u4e5f\u4e0d\u9760\u8fd9\u73a9\u610f\u517b\u6d3b\u81ea\u5df1\uff0c\u5c31\u522b\u6b7b\u4e5e\u767d\u8d56\u7684\u5199\u4e86\uff0c\u4f60\u4eec\u4e5f\u90fd\u597d\u597d\u6b47\u6b47\uff0c\u966a\u966a\u5bb6\u4eba\u670b\u53cb\uff0c\u522b\u8001\u73a9\u624b\u673a\u4e86\u554a\u3002<\/p>\n
\n\u4eca\u5929\u6211\u4eec\u63a5\u7740\u4e4b\u524dOC\u7684\u5185\u5bb9\uff0c\u8bb2\u8bb2\u65b0\u7684Objective-C\u5728\u8bed\u6cd5\u5c42\u9762\u505a\u4e86\u54ea\u4e9b\u7b80\u5316\u3002<\/p>\n
4\u3001\u8bed\u6cd5\u7b80\u5316<\/p>\n
\u5f88\u591a\u521a\u4ece\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u8f6c\u5230Objective-C\u7684\u540c\u5b66\u770b\u5230\u957f\u957f\u7684\u51fd\u6570\u540d\u4f1a\u611f\u5230\u5d29\u6e83\uff0c\u4e0d\u8fc7\u6211\u4e4b\u524d\u4e5f\u63d0\u5230\u8fc7\uff0c\u8fd9\u79cd\u8bed\u6cd5\u8ba9\u6d88\u606f\u7684\u4f20\u9012\u50cf\u4e00\u4e2a\u82f1\u8bed\u53e5\u5b50\uff0c\u5927\u5927\u589e\u5f3a\u4e86\u53ef\u8bfb\u6027\u3002\u6bd4\u5982\u4f60\u60f3\u521d\u59cb\u5316\u4e00\u4e2a\u6d6e\u70b9\u6570\uff0c\u9700\u8981\u8fd9\u4e48\u5199\uff1a<\/p>\n
NSNumber\u00a0value = [NSNumber numberWithFloat:123.45f];<\/p>\n
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\nNSNumber<\/strong><\/p>\n\u7b80\u5316\u524d\u7684\u5199\u6cd5\uff1a<\/p>\n
NSNumber *value;\nvalue = [NSNumber numberWithInt:12345];\nvalue = [NSNumber numberWithFloat:123.45f];\nvalue = [NSNumber numberWithBool:YES];\n<\/code><\/pre>\n\u7b80\u5316\u540e\u7684\u5199\u6cd5\uff1a<\/p>\n
NSNumber *value;\nvalue = @12345;\nvalue = @123.45f;\nvalue = @YES;\n<\/code><\/pre>\n\u88c5\u7bb1\u8868\u8fbe\u5f0f\u4e5f\u53ef\u4ee5\u91c7\u7528\u7c7b\u4f3c\u7684\u5199\u6cd5\uff1a<\/p>\n
NSNumber *piOverSixteen = [NSNumber numberWithDouble: ( M_PI \/ 16 )];\nNSString *path = [NSString stringWithUTF8String: getenv(\"PATH\")];\n<\/code><\/pre>\n\u53ef\u4ee5\u5206\u522b\u7b80\u5199\u4e3a\uff1a<\/p>\n
NSNumber *piOverSixteen = @( M_PI \/ 16 );\nNSString *path = @( getenv(\"PATH\") );\n<\/code><\/pre>\n\u5bf9\u4e8e\u5b57\u7b26\u4e32\u8868\u8fbe\u5f0f\u6765\u8bf4\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\u8868\u8fbe\u5f0f\u7684\u503c\u4e00\u5b9a\u4e0d\u80fd\u662fNULL\uff0c\u5426\u5219\u4f1a\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n
NSArray<\/strong><\/p>\n\u5bf9\u4e8eNSArray\u7684\u521d\u59cb\u5316\u6765\u8bf4\uff0c\u6709\u975e\u5e38\u591a\u7684\u5199\u6cd5\uff0c\u8fd9\u91cc\u5c31\u4e0d\u518d\u4e00\u4e00\u7f57\u5217\uff0c\u6211\u4eec\u76f4\u63a5\u770b\u65b0\u7684\u5199\u6cd5<\/p>\n
NSArray *array;\narray = @[]; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/\u7a7a\u6570\u7ec4\narray = @[ a ]; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/\u4e00\u4e2a\u5bf9\u8c61\u7684\u6570\u7ec4\narray = @[ a, b, c ]; \/\/\u591a\u4e2a\u5bf9\u8c61\u7684\u6570\u7ec4\n<\/code><\/pre>\n\u975e\u5e38\u7b80\u5355\uff0c\u518d\u4e5f\u4e0d\u7528\u8bb0\u4f4f\u521d\u59cb\u5316\u591a\u4e2a\u5bf9\u8c61\u7684\u6570\u7ec4\u65f6\uff0c\u540e\u9762\u8fd8\u8981\u8ddf\u4e00\u4e2a\u5012\u9709\u7684nil\u3002<\/p>\n
\u73b0\u5728\u6211\u4eec\u770b\u4e00\u4e0b\u5f53\u58f0\u660e\u591a\u5bf9\u8c61\u7684\u6570\u7ec4\u65f6\uff0c\u7f16\u8bd1\u5668\u662f\u5982\u4f55\u5904\u7406\u7684\uff1a<\/p>\n
array = @[ a, b, c ];\n<\/code><\/pre>\n\u7f16\u8bd1\u5668\u751f\u6210\u7684\u4ee3\u7801\uff1a<\/p>\n
id objects[] = { a, b, c };\nNSUInteger count = sizeof(objects)\/ sizeof(id);\narray = [NSArray arrayWithObjects:objects count:count];\n<\/code><\/pre>\n\u597d\u5427\uff0c\u7f16\u8bd1\u5668\u5df2\u7ecf\u4e3a\u6211\u4eec\u628a\u8fd9\u4e9b\u7b80\u5355\u91cd\u590d\u7684\u5de5\u4f5c\u90fd\u505a\u4e86\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5b89\u5fc3\u89e3\u51b3\u771f\u6b63\u7684\u95ee\u9898\u4e86\uff1a\uff09\u4e0d\u8fc7\u6709\u4e00\u70b9\u8981\u6ce8\u610f\uff0c\u5982\u679ca\uff0cb\uff0cc\u5bf9\u8c61\u6709nil\u7684\u8bdd\uff0c\u8fd0\u884c\u65f6\u4f1a\u629b\u51fa\u5f02\u5e38\uff0c\u8fd9\u70b9\u548c\u539f\u6765\u7684\u5904\u7406\u65b9\u5f0f\u4e0d\u540c\uff0c\u7f16\u7801\u7684\u65f6\u5019\u8981\u591a\u52a0\u5c0f\u5fc3\u3002<\/p>\n
NSDictionary<\/strong><\/p>\n\u540c\u6837\uff0c\u5bf9\u4e8e\u5b57\u5178\u8fd9\u4e2a\u6570\u636e\u7ed3\u6784\u6765\u8bf4\uff0c\u6709\u5f88\u591a\u79cd\u521d\u59cb\u5316\u7684\u65b9\u5f0f\uff0c\u6211\u4eec\u6765\u770b\u65b0\u7684\u5199\u6cd5\uff1a<\/p>\n
NSDictionary *dict;\ndict = @{}; \/\/\u7a7a\u5b57\u5178\ndict = @{ k1 : o1 }; \/\/\u5305\u542b\u4e00\u4e2a\u952e\u503c\u5bf9\u7684\u5b57\u5178\ndict = @{ k1 : o1, k2 : o2, k3 : o3 }; \/\/\u5305\u542b\u591a\u4e2a\u952e\u503c\u5bf9\u7684\u5b57\u5178\n<\/code><\/pre>\n\u00a0 \u00a0 \u6700\u540e\u6211\u4eec\u603b\u63a5\u4e00\u4e0b\u5bb9\u5668\u7c7b\u6570\u636e\u7ed3\u6784\u7b80\u5316\u7684\u9650\u5236\uff1a<\/strong><\/p>\n1\u3001\u91c7\u7528\u4e0a\u8ff0\u5199\u6cd5\u6784\u5efa\u7684\u5bb9\u5668\u90fd\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u5982\u679c\u9700\u8981\u751f\u6210\u53ef\u53d8\u5bb9\u5668\uff0c\u53ef\u4ee5\u4f20\u9012-mutableCopy\u6d88\u606f\u3002\u4f8b\u5982<\/p>\n
NSMutableArray *mutablePlanets = [@[\n@\"Mercury\", @\"Venus\", @\"Earth\",\n@\"Mars\", @\"Jupiter\", @\"Saturn\",\n@\"Uranus\", @\"Neptune\"\n] mutableCopy];\n<\/code><\/pre>\n2\u3001\u4e0d\u80fd\u5bf9\u5e38\u91cf\u6570\u7ec4\u76f4\u63a5\u8d4b\u503c\uff0c\u89e3\u51b3\u529e\u6cd5\u662f\u5728\u7c7b\u65b9\u6cd5(void)initialize\u8fdb\u884c\u8d4b\u503c\uff0c\u5982\u4e0b\uff1a<\/p>\n
@implementation MyClass\n\nstatic NSArray *thePlanets;\n+ (void)initialize {\n if (self == [MyClass class]) {\n thePlanets = @[\n @\"Mercury\", @\"Venus\", @\"Earth\",\n @\"Mars\", @\"Jupiter\", @\"Saturn\",\n @\"Uranus\", @\"Neptune\"\n ];\n }\n}\n<\/code><\/pre>\n3\u3001\u6ca1\u6709\u5e38\u91cf\u5b57\u5178<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e0a\u4e00\u671f\u6587\u7ae0\u53d1\u4e86\u4ee5\u540e\uff0c\u5f88\u591a\u8bfb\u8005\u53cd\u9988\u8bf4\uff0c\u4e3a\u6bdb\u4e0d\u7528\u827e\u7ef4\u7684\u5934\u50cf\u505a\u5c01\u9762\u554a\uff0c\u8ba9\u6211\u4eec\u770b\u770b\u8fd9\u5bb6\u4f19 … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":19,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[1],"tags":[3],"class_list":["post-16","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-objective-c","has-featured-image"],"jetpack_featured_media_url":"https:\/\/macshuo.com\/wp-content\/uploads\/2013\/05\/ive.png","_links":{"self":[{"href":"https:\/\/macshuo.com\/index.php?rest_route=\/wp\/v2\/posts\/16","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/macshuo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/macshuo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/macshuo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/macshuo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16"}],"version-history":[{"count":11,"href":"https:\/\/macshuo.com\/index.php?rest_route=\/wp\/v2\/posts\/16\/revisions"}],"predecessor-version":[{"id":92,"href":"https:\/\/macshuo.com\/index.php?rest_route=\/wp\/v2\/posts\/16\/revisions\/92"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/macshuo.com\/index.php?rest_route=\/wp\/v2\/media\/19"}],"wp:attachment":[{"href":"https:\/\/macshuo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/macshuo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/macshuo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"enter](\"https:\/\/macshuo.com\/wp-content\/uploads\/2013\/05\/ive.png\")