应该 IOrderedEnumerable
作为回报纯粹键入语义价值?
Should IOrderedEnumerable
be used as a return type purely for semantic value?
例如,消费在presentation层的模型时,我们怎么能知道收集是否需要订购或已订购了?
For example, when consuming a model in the presentation layer, how can we know whether the collection requires ordering or is already ordered?
怎么样在一个仓库包装与顺序存储过程通过
条款的情况。如若库返回 IOrderedEnumerable
?怎么会是这样实现的?
What about in the case that a repository wraps a stored procedure with an ORDER BY
clause. Should the repository return IOrderedEnumerable
? And how would that be achieved?
我不认为这会是一个不错的主意:
I don't think it would be a good idea:
如果IOrderedEnumerable被用作返回类型为纯粹的语义价值?
Should IOrderedEnumerable be used as a return type purely for semantic value?
例如,消费在presentation层的模型时,我们怎么能知道收集是否需要订购或已订购了?
For example, when consuming a model in the presentation layer, how can we know whether the collection requires ordering or is already ordered?
什么在明知序列是有序的,如果你不知道被哪个键是有序的点?在 IOrderedEnumerable
接口的一点是要能够添加辅助排序标准,这没有多大意义,如果你不知道什么是主要标准。
What is the point in knowing that a sequence is ordered if you don't know by which key it is ordered? The point of the IOrderedEnumerable
interface is to be able to add a secondary sort criteria, which doesn't make much sense if you don't know what is the primary criteria.
怎么样在一个仓库包装与ORDER BY子句的存储过程的情况。如果存储库返回IOrderedEnumerable?怎么会是这样实现的?
What about in the case that a repository wraps a stored procedure with an ORDER BY clause. Should the repository return IOrderedEnumerable? And how would that be achieved?
这是没有意义的。正如我已经说过, IOrderedEnumerable
用于添加辅助排序标准,但是当数据被存储过程返回,它已经排序,为时已晚添加第二排序标准。所有你能做的就是重新梳理它完全,因此调用 ThenBy
的结果不会有预期的效果。
This doesn't make sense. As I already said, IOrderedEnumerable
is used to add a secondary sort criteria, but when the data is returned by the stored procedure, it is already sorted and it's too late to add a secondary sort criteria. All you can do is re-sort it completely, so calling ThenBy
on the result wouldn't have the expected effect.
上一篇:谷歌地图应用程序崩溃的棒棒堂机器人机器人、应用程序、棒棒、地图
下一篇:OAuth的和定制方案导致A" ERR_UNKNOWN_URL_SCHEME"在Chrome浏览器浏览器、方案、OAuth、QUOT