是否有可能在SWI Prolog中定义一个类似于Sicstus Prolog中的undo谓词?从西克斯都的描述中: undo(:Goal)
The goal call(Goal) (see section Control) is executed on backtracking. This predicate is useful if the Goal performs some side-effect that must be done on backtracking to undo another side-effect. SWI谓词setup_call_cleanup不会这样做,因为它
linux-headers-generic-lts-xenial : Depends: linux-headers-4.4.0-124-generic but it is not installedThe following extra packages will be installed:The following NEW package
我创建了这个用户所属的角色,并设置了多个模式的执行权限,但是在数据架构上,我需要能够动态地创建和删除表。根据屏幕截图,我为角色(以及有效的用户)提供了所有可用的权限,但是当我尝试创建一个索引时,这是我得到的错误: [UUID] [UNIQUEIDENTIFIER] ROWGUIDCOL NOT NULL,
ALTER TABLE [Data