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ios 7 ContAinsstring怎么实现

iOS 7 containsstring的实现方法如下: - (BOOL)containsString:(NSString *)aString NS_AVAILABLE(10_10, 8_0){ if (IS_BLANK_STRING(aString)) { return NO; } if ([self rangeOfString:aString].location != NSNotFound) { return YES; } ret...

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