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Check if value exists in Postgres array
... value exists or not is as simple as using IN or NOT IN.
e.g.
id => uuid
exception_list_ids => uuid[]
select * from table where id NOT IN (select unnest(exception_list_ids) from table2)
share
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How can I remove specific rules from iptables?
...d temporary rule with some comment:
comment=$(cat /proc/sys/kernel/random/uuid | sed 's/\-//g')
iptables -A ..... -m comment --comment "${comment}" -j REQUIRED_ACTION
2. When the rule added and you wish to remove it (or everything with this comment), do:
iptables-save | grep -v "${comment}" | ip...
An operation on a socket could not be performed because the system lac...
...em-lacked-sufficient-buffer-space服务端程序崩溃重启，查看日志报错：An operation on a socket could not be performed because the system lacked sufficient buffer space(由于系统缓冲区空间不足，或者因为队列已满，不能执行套接字上的操作。)服务端程序崩...
An operation on a socket could not be performed because the system lac...
...em-lacked-sufficient-buffer-space服务端程序崩溃重启，查看日志报错：An operation on a socket could not be performed because the system lacked sufficient buffer space(由于系统缓冲区空间不足，或者因为队列已满，不能执行套接字上的操作。)服务端程序崩...
An operation on a socket could not be performed because the system lac...
...em-lacked-sufficient-buffer-space服务端程序崩溃重启，查看日志报错：An operation on a socket could not be performed because the system lacked sufficient buffer space(由于系统缓冲区空间不足，或者因为队列已满，不能执行套接字上的操作。)服务端程序崩...
C++的内部类 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++的内部类标准C：不能访问内部类的private成员。但编译器编译能通过且不报错。标准C：不能访问内部类的private成员。
但编译器编译能通过且不报错。C++ 内部类
warning RC2182: duplicate dialog control ID 1002 - C/C++ - 清泛网 - 专注C/C++及内核技术
warning RC2182: duplicate dialog control ID 1002原因：报错行的控件ID值（这里是1002），与其他的控件ID值一样，发生冲突了。解决：resource.h中将值一样的控件ID改为不同的值。原因：报错行的控件ID值（这里是1002），与其他的控件ID值一...
应用程序无法正常启动0xc0150002 - C/C++ - 清泛网 - 专注C/C++及内核技术
应用程序无法正常启动0xc0150002MFC写的程序启动不了，报错 0xc0150002。-----------------------解决思路-------------------------打开Windows事件查看器(我的电脑右键...MFC写的程序启动不了，报错 0xc0150002。
-----------------------解决思路-----------...
Gdiplus::Bitmap::LockBits \"Invalid Parameter\" - C/C++ - 清泛网 - 专注C/C++及内核技术
Gdiplus::Bitmap::LockBits "Invalid Parameter"使用GDI+加载图片时，报错Invalid Parameter，原因就是路径不对或路径中文乱码，可能是单字节转换宽字节时中文字符串乱码导致的。解决方法...使用GDI+加载图片时，报错“Invalid Parameter”，原因就...
use of deleted function std::unique_ptr 编译错误剖析，你可能少了一个st...
...n std::unique_ptr 编译错误剖析，你可能少了一个std::move编译报错日志如下： usr include c++ 4 7 bits stl_construct h:77:7: error: use of deleted function & 39;std::unique_ptr<_Tp, _Dp>::unique_ptr(const std::unique_p 编译报错日志如下：
/usr/include/c++/4.7/bits/s...