摘要:
1>初始化:stringWithContentsOfFile:stringWithContentsOfURL:stringByAppendingString:initWithString:stringWithString:stringWithFormat:writeToFile:stringWithContentsOfFile:2>比较:isEqualToString,compare,NSComparisonResult BOOL result = [astring01 isEqualToString:astring02]compare方法(comparer返回的三种值:NSOrd 阅读全文