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NSString 与NSMutableString的区别Suppose You have a code like thisNSString*s=[[NSStringalloc]initWithString:@"Hello"];s=[sstringByAppendingString:@"World"]... 阅读全文
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8Explicit Animations 指明的动画 笔记 If you want something done right, do it yourself. 如果你想让事情做好,那就自动来。 Charles-Guillaume Etienne The previous chapter introduced the concept of impl... 阅读全文
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Implicit Animations 默认动画 读书笔记 Do what I mean, not what I say.Edna Krabappel,The Simpsons Part I covered just about everything that Core Animation can do, apart fromanimation. Animatio... 阅读全文
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Understanding Scroll Views 深入理解 scroll view 读书笔记 It may be hard to believe, but aUIScrollViewisn't much different than a standardUIView. Sure, the scroll view has a few more methods, but those m... 阅读全文
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CAGradientLayer CAGradientLayeris used to generate a smooth gradient between two or more colors. 是用来产生渐变色的。 It's possible to replicate the appearance of aCAGradientLayerusing Core Graphics to... 阅读全文