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iOS6.0：attributedText
@property(nullable, nonatomic,copy) NSAttributedString *attributedText...
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$ pod setup時，CocoaPods報CocoaPods was not able to update the `master` repo. If this is an unexpected issue and persists you can inspect it running `pod repo update --verbose`錯誤。
解決辦法如下：先刪除全局的緩存：$ sudo rm -fr ~/Library/Caches/CocoaPods/$ sudo rm -fr ~...
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數(shù)據(jù)安全之MD5加密一、數(shù)據(jù)安全 數(shù)據(jù)本身的安全(現(xiàn)代密碼學(xué)) 數(shù)據(jù)保密 數(shù)據(jù)完整性驗(yàn)證 數(shù)據(jù)雙向認(rèn)證——網(wǎng)絡(luò)傳輸：三次握手，大型的數(shù)據(jù)防止被人截包。 數(shù)據(jù)防...