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Expression is not assignable
參考文章: http://blog.csdn.net/like7xiaoben/article/details/8969093 為什么編譯器會報...
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圖文混排 - 1NSAttributedString: An NSAttributedString object manages character strin...
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AFNetworking的簡單應用知識儲備1.1 AFNetworking 是一個輕量級的iOS 網(wǎng)絡(luò)通信類庫1.2 AFNetworing 基于 NSOperation和NSU...
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nil / Nil / NULL / NSNull的區(qū)別
1.nil: 指向一個對象的空指針, 對Objective-C中id對象付空值.2.Nil：指向一個類的空指針, a null pointer ...
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設(shè)置UINavigationBar & UITabBar的顏色
[[UINavigationBar appearance] setBarTintColor:[UIColor lightGrayColor]];...
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數(shù)組與指針
（void)viewDidLoad {[super viewDidLoad];int array[] = {10, 20, 30, 40};in...
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URI & URL & URN
URI: Uniform Resource Identifier, 統(tǒng)一資源標識符，用來標識網(wǎng)絡(luò)資源名稱的獨有字符串。這種標識允許用戶對互聯(lián)網(wǎng)或...
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Class *anObject = [[Class alloc] init];
What does alloc do?It allocates a chunk of memory to hold the object and...