Tuple or Object array is best to return from a method for multiple values in C#?

Question

My current code is

object[] method()
{
returning new object[] {"",12,} like this ?
}

Is Tuple a better option instead ?

I got some information about Tuple performance here

Please suggest a good option to move..

This class is used frequently and request will be frequent.

UPDATE

That return values is differs in different methods. I have all methods return's values from 2 to 10 as max.

Logic is i m converting sp [MS SQL stored procedure] logic to mongoDb equivalent ( all data are present )

So for sp one method is there which should return as sp returns.In sp for that OUT parameters is used and it returns some integer values also.

In replacing that i m using

object[] method(out int returnValue)
 {
 }

returnValue is for error code and object[] as return type for sp's out parameters.

What is best way to do this ?

Answer 1

You also have a 3rd option: a simple typed result class or struct with properties. Tuple is okay if you are returning not more then 3 items.

Returning an object array in C# is a bad practice - try to be as typed as possible. As a general rule of thumb you are creating the code for your fellow developer (so that he/she can use/modify it easily) and not the computer. Let optimizations happen by the framework.

Answer 2

I would just create a new class and return instances of it instead. That gives you a type safety and readability thanks to proper property names instead of Item1, Item2.

Instead of array return IEnumerable<> - that way you can change the implementation of the method (for instance by introducing yield return) without breaking consumers.

And remember that

premature optimisation is the root of all evil