大约有 40,000 项符合查询结果(耗时:0.0492秒) [XML]

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XDocument or XmlDocument

... I can't find something useful, could you please tell me why you would use one over another ? 7 Answers ...
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When to use Common Table Expression (CTE)

...ould need to use them. They would seem to be redundant as the same can be done with derived tables. Is there something I am missing or not understanding well? Can someone give me a simple example of limitations with regular select, derived or temp table queries to make the case of CTE? Any simple ex...
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What is the difference between user and kernel modes in operating systems?

... How the switch occurs. The switch from user mode to kernel mode is not done automatically by CPU. CPU is interrupted by interrupts (timers, keyboard, I/O). When interrupt occurs, CPU stops executing the current running program, switch to kernel mode, executes interrupt handler. This handler saves...
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ListView inside ScrollView is not scrolling on Android

...ome EditTexts in the top part and then a tab host with two tabs which have one ListView each. When the EditText views are focused, the soft keyboard comes up and as I have a ScrollView, the content is scrollable. But the problem comes when there are more items in ListViews (ones in tabs), I am not ...
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What is the best way to dump entire objects to a log in C#?

... @GuySoft I suspect one of the properties on your object, or the object itself, is not serializable. – Bernhard Hofmann Oct 20 '14 at 9:15 ...
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Obtaining a powerset of a set in Java

...the entire power set is never stored at once... So you can iterate over it one-by-one without needing it to be stored in memory. I'd like to think it's a better option... Note the complexity is the same, O(2^n), but the memory requirements are reduced (assuming the garbage collector behaves! ;) ) /...
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How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller

...lent of that. Of course you will have to make sure that the invocation is done, when the session is still available, so annotate your controller method with @Transactional. An alternative is to create an intermediate Service layer between the Controller and the Repository that could expose methods w...
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Why should I avoid using Properties in C#?

...ot to use them. He gave some reason, but I don't really understand. Can anyone explain to me why I should or should not use properties? In C# 3.0, with automatic properties, does this change? ...
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What is NoSQL, how does it work, and what benefits does it provide? [closed]

... What exactly is it? On one hand, a specific system, but it has also become a generic word for a variety of new data storage backends that do not follow the relational DB model. How does it work? Each of the systems labelled with the generic name w...
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Output first 100 characters in a string

... Not disparaging your answer, but there one only 24 letters in Greek, ς and σ are the same letter :-) – paxdiablo Aug 15 '10 at 14:07 4 ...