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Entity framework self referencing loop detected [duplicate]
...ulChaudhary it depends on what you want. If you simply want to consume the service via AJAX from an SPA, then this is sufficient, and I'd say better if you're doing MVVM, because it allows you to specify the ViewModel on the server. if you want to use this service as part of an N-Tier API, consumed ...
How to use NULL or empty string in SQL
...ERE SomeCol = '' OR SomeCol IS NULL;
SELECT *
FROM #T
WHERE SomeCol = ''
UNION ALL
SELECT *
FROM #T
WHERE SomeCol IS NULL;
SELECT *
FROM #T
WHERE EXISTS ((SELECT NULL UNION SELECT '') INTERSECT SELECT SomeCol);
And some non-sargable ones...
SELECT *
FROM #T
WHERE IIF(SomeCol <> '',0,1) ...
Is there any difference between GROUP BY and DISTINCT
... 12 there do appear to be cases where DISTINCT, getting distinct values by UNION, and GROUP BY work differently. I just had a case earlier today where DISTINCT and distinct by UNION cause an oracle error, but GROUP BY worked; I was selecting only 1 column from a view and not using any aggregation; I...
What is 'Pattern Matching' in functional languages?
...e functional languages allow you define simple data types called "disjoint unions" or "algebraic data types". These data structures are simple containers, and can be recursively defined. For example:
type 'a list =
| Nil
| Cons of 'a * 'a list
defines a stack-like data structure. Think of...
What is the significance of ProjectTypeGuids tag in the visual studio project file
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C/C++ Struct vs Class
...long ago, back when C++ was still known as "C with Classes."
Note that C unions work with C++, but not the other way around. For example
union WorksWithCppOnly{
WorksWithCppOnly():a(0){}
friend class FloatAccessor;
int a;
private:
float b;
};
And likewise
typedef union friend{...
Remove border from IFrame
...
When validating the document using Markup Validation Service frameBorder results in an error as it's not HTML5 compliant: The frameborder attribute on the iframe element is obsolete. Use CSS instead. In HTML5 I would set a CSS property of border:0. Is there a way to make it b...
How do I log ALL exceptions globally for a C# MVC4 WebAPI app?
I am developing an API Service Layer for a client and I have been requested to catch and log all errors globally.
5 Answers...
Is String.Format as efficient as StringBuilder
...var referToTheComputedValuesSoCompilerCantOptimiseTheLoopsAway= concatkeys.Union(stringbuilderkeys).Union(cachedsbkeys).Union(formatkeys).LastOrDefault(x=>x[1]=='-');
Console.WriteLine(referToTheComputedValuesSoCompilerCantOptimiseTheLoopsAway);
...
Can I incorporate both SignalR and a RESTful API?
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