Enumerable.Empty<T>() equivalent for IQueryable

C#ReturnIqueryable

C# Problem Overview

When a method returns IEnumerable<T> and I do not have anything to return, we can use Enumerable.Empty<T>().

Is there an equivalent to the above for a method returning IQueryable<T>

C# Solutions

Solution 1 - C#

Maybe:

Enumerable.Empty<T>().AsQueryable();

Solution 2 - C#

Enumerable.Empty<T>().AsQueryable(); should do it.

Solution 3 - C#

Try return new T[0].AsQueryable();

Solution 4 - C#

Say you have an IQueryable<T> called result:

return result.Take(0);

Solution 5 - C#

I would advise against alejandrobog's answer as this will still use memory to create an empty array.

Array.Empty<T>().AsQueryable();

or

Enumerable.Empty<T>().AsQueryable();

are preferred. Array.Empty will allocate a static typed array so only one empty array of T is created and that is shared amongst all Empty queryables.

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Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionNumanView Question on Stackoverflow
Solution 1 - C#SunnyView Answer on Stackoverflow
Solution 2 - C#JoshView Answer on Stackoverflow
Solution 3 - C#alejandrobogView Answer on Stackoverflow
Solution 4 - C#Protector oneView Answer on Stackoverflow
Solution 5 - C#JoshView Answer on Stackoverflow