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How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited
To illustrate, assume that I have two tables as follows:
13 Answers
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bash assign default value
...d not found. Any way to avoid that? Or will I have to stick to the latter? Can someone give an example where the assign default is actually useful?
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@Basic(optional = false) vs @Column(nullable = false) in JPA
...ordon Yorke (EclipseLink Architecture Committee Member, TopLink Core Technical Lead, JPA 2.0 Expert Group Member) wrote a good answer on this topic so instead of paraphrasing him, I'll quote his answer:
The difference between optional and
nullable is the scope at which they
are evaluated. Th...
Java String remove all non numeric characters
Trying to remove all letters and characters that are not 0-9 and a period. I'm using Character.isDigit() but it also removes decimal, how can I also keep the decimal?
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What does Provider in JAX-RS mean?
...t ‘@Provider’ annotation does? I have been reading documentation but I cant get it.
If there are resource classes that service the incoming requests, what do Providers do? How are they different from singleton resource classes when I create a persistent resource class (the one that is not per-...
Changing iframe src with Javascript
I am trying to change an <iframe src=... > when someone clicks a radio button. For some reason my code is not working correctly and I am having trouble figuring out why. Here is what I have:
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What is “(program)” in Chrome debugger’s profiler?
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(program) is Chrome itself, the root of the tree calling all other code...it's there because the jump from native code to JavaScript, resource loading, etc. has to start somewhere :)
You can see examples of the treeview in the Chrome developer tool docs.
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C++ Double Address Operator? (&&)
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This is C++11 code. In C++11, the && token can be used to mean an "rvalue reference".
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How to make inline functions in C#
...sole.WriteLine(x);
}
Action<int> helloWorld = delegate // parameters can be elided if ignored
{
Console.WriteLine("Hello world!");
}
Lambdas are new in C# 3.0 and come in two flavours.
Expression lambdas:
Func<int, int, int> add = (int x, int y) => x + y; // or...
Func<int,...
Is PHP's count() function O(1) or O(n) for arrays?
...ount() really count the all the elements of a PHP array, or is this value cached somewhere and just gets retrieved?
3 Answ...