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What is NoSQL, how does it work, and what benefits does it provide? [closed]
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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...
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...
How to overload std::swap()
...re swapping, so that it can be found via argument-dependent lookup (ADL). One particularly easy thing to do is:
class X
{
// ...
friend void swap(X& a, X& b)
{
using std::swap; // bring in swap for built-in types
swap(a.base1, b.base1);
swap(a.base2, b....
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 ...
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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Equivalent of “throw” in R
How does one "throw" an error in R? I have a function that takes a data frame and some column names and does stuff with them. If the columns don't exist, I want the function to stop and to stop all functions depending on it.
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What is the best way to dump entire objects to a log in C#?
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@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...
Is there an online name demangler for C++? [closed]
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This one worked for me, but not the one in the more popular answer: _ZN9cdnalizer11rewriteHTMLINS_6apache8IteratorEcEET_RKSsRKNS_6ConfigES3_S3_St8functionIFS3_RKS3_SB_EES9_IFvSsEE
– matiu
Dec...