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CoreData常见问题解答
1. 错误: reason: 'keypath name not found in entity ' // 原因: request.predicate = [NSPredicate predicateWithFormat:@"name = 'aaa' "];  这个name 字段没有找到. // 解决方法: 打开CoreData.xcdatamodeld 文件 查看你的对应的实体, 看看是否...
分类:其他好文   时间:2015-04-30 18:14:17    阅读次数:116
修改core data的data model导致的错误
现象:程序运行出现如下错误信息:reason=“Themodelusedtoopenthestoreisincompatiblewiththeoneusedtocreatethestore”原因:修改了DataModel文件,增加了新的Entity,包括Attribute属性、Relationship关系等等。解决办法:不管是模拟器还是真机,把app删除重新运行即可。
分类:其他好文   时间:2015-04-29 12:01:57    阅读次数:106
一个UITableView删除操作时的异常处理
现象:删除某行的时候,出现如下异常信息‘NSInternalInconsistencyException‘,reason:‘Invalidupdate:invalidnumberofrowsinsection0.Thenumberofrowscontainedinanexistingsectionaftertheupdate(5)mustbeequaltothenumberofrowscontainedinthatsectionbeforetheupdate(5),plu..
分类:其他好文   时间:2015-04-29 07:24:24    阅读次数:195
ZOJ 3430 AC自动机
http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=4114 Nobita did use an outstanding anti-virus software, however, for some strange reason, this software did not check email attachment...
分类:其他好文   时间:2015-04-28 21:03:10    阅读次数:164
explode和implode的运用
1 $kesu_list=DD('Kesu.Kesu')->kesu_list(); 2 foreach($kesu_list[0] as $key=>$val){ 3 $reason_id_list[]['reason_id']=$val['reason_id']; 4 } 5 fore...
分类:其他好文   时间:2015-04-28 14:02:47    阅读次数:109
HDFS 异常
HDFS 异常 HTTP ERROR 500 Problem accessing /nn_browsedfscontent.jsp. Reason: Cannot issue delegation token. Name node is in safe mode. The reported blocks 0 needs additional 10 blocks to reach th...
分类:其他好文   时间:2015-04-28 09:39:20    阅读次数:152
Customizing AX 2012 Released Product ListPage Filter using X++
In Microsoft Dynamics AX 2012, ListPages are more restricted from customization than in prior versions of AX. Primary reason for the restriction is so...
分类:其他好文   时间:2015-04-27 09:37:03    阅读次数:221
iOS开发——异常:[__NSCFNumber length]: unrecognized selector sent to instance
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber length]: unrecognized selector sent to instance 网上...
分类:移动开发   时间:2015-04-26 18:01:19    阅读次数:399
【问题处理】Application tried to present modally an active controller
问题: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present modally an active controller .' 解决: 判断controller是不是有presentedViewController if ([U...
分类:移动开发   时间:2015-04-22 14:01:02    阅读次数:521
*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<DataModel 0x7fe44b
self.model=[[DataModel alloc]init];     [self.model setValue:@"searph" forKey:@"stockName"];     [self.model setValue:@"10.0" forKey:@"price"];     [self.model addObserver:self forKeyPath:@"price" ...
分类:移动开发   时间:2015-04-20 18:32:29    阅读次数:152
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