String Performance Tip: Verifying if an Object is a String

There are two primary methods to confirm whether an object is a string. Here is an example of both:

if (obj is string)
{
    return obj.ToString();
}

Or use pattern matching…

if (obj is string value)
{
    return value;
}

Benchmark Results

As indicated by these results, utilizing the first method mentioned above to check whether an object is a string is 1.17 times more performant than using pattern matching.

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