General Performance: Retrieving the Nullable Value from a Reference Type

If your method returns a reference type or a null, it can be implemented in the following ways:

Example 1

var result = person != null ? person : null;
return result;

Example 2

var result =person ?? null;
return result;

Performance Breakdown

The benchmark results indicate that the null-coalescing operator (Example 2) is slightly faster than the ternary conditional expression (Example 1).

When I set up my EditorConfig to check for this issue, it looks like this:
dotnet_diagnostic.IDE0029.severity = suggestion

Prefer the null-coalescing operator over a ternary check when handling nullable values. It produces cleaner code and provides a measurable performance benefit.

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