Xcode更新到7.3后会出现NSObject+MJProperty.h报Cannot create __weak reference in file using manual reference counting错误信息. 解决的办法:在Build Settings--------->Aplle LLVM7.1 - Language - Objectibe-C------------->Weak Reference In Manual Retain Release设置为YES.…

  原帖地址 http://stackoverflow.com/questions/36147625/xcode-7-3-cannot-create-weak-reference-in-file-using-manual-reference-counting activeoldestvotes up vote87down voteaccepted Set Build Settings -> Apple LLVM 7.1 - Language - Objective C -> Weak Refe…

http://blog.csdn.net/ouq68/article/details/51003876 解决方法: Please set ‘Weak References in Manual Retain Release:YES’.…

解决的办法:在Build Settings--------->Aplle LLVM8.0 - Language - Objectibe-C------------->Weak Reference In Manual Retain Release 设置为YES.…

之前的编程没有遇到过,应该是苹果官方那边又做了新规吧. 不过不要紧,只要根据这个就能解决报错问题.  Set Build Settings -> Apple LLVM 7.1 - Language - Objective C -> Weak References in Manual Retain Release to YES.    参考: http://blog.csdn.net/sjcode/article/details/51014679…

Question:How to reference two table when lack reference column. Example: 1.Create two tables the one of  lack reference column. CREATE TABLE t1( t_id NUMBER, t_age NUMBER );INSERT INTO t1 VALUES(1,24);COMMIT; CREATE TABLE t2( t_name VARCHAR2(20) ); I…

https://docs.mongodb.org/manual/reference/operator/aggregation/unwind/#examples http://www.clusterdb.com/mongodb/joins-and-other-aggregation-enhancements-in-mongodb-3-2…

1.错误描述 1 queries executed, 0 success, 1 errors, 0 warnings 查询:SELECT a.createUserId AS typeId, (SELECT COUNT(c.id) FROM t_aps c WHERE c.`status` IN (2, 5) AND c.createTime >= start... 错误代码: 1247 Reference 'startTime' not supported (forward reference…

之前在自己的项目中添加了一个分支,然后做了一些操作,比如同步本地的分支情况到远程仓库中,然后在远程仓库中完成分支合并,以及 Pull request 等等操作,后来,在本地仓库中进行 git fetch命令操作的时候,出现了一个错误,即 error: cannot lock ref 'refs/remotes/origin/master': unable to resolve reference 'refs/remotes/origin/master': reference broken 下面是…

FATAL: UNABLE TO CREATE ‘…GIT/INDEX.LOCK’ FILE EXISTS Hi, Today I will share you my other experience using git control system, it happened to me after I’ve created a branch, when adding my changes to remote or even committed my file I’ve started to s…