Benchmarque Blog Post Code

AppendText.cs

public interface AppendText
{
    string Append(params string[] args);
}

ConcatAppendText.cs

public class ConcatAppendText :
    AppendText
{
    public string Append(params string[] args)
    {
        string result = string.Empty;

        for (int i = 0; i < args.Length; i++)
        {
            result += args[i];
        }

        return result;
    }
}

JoinAppendText2.cs

public class JoinAppendText :
    AppendText
{
    public string Append(params string[] args)
    {
        return string.Join("", args);
    }
}

NameAppendBenchmark.cs

public class NameAppendBenchmark :
    Benchmark<AppendText>
{
    static readonly string[] Names = new[]
        {
            "Adam", "Betty", "Charles", "David",
            "Edward", "Frodo", "Gandalf", "Henry",
            "Ida", "John", "King", "Larry", "Morpheus",
            "Neo", "Peter", "Quinn", "Ralphie", "Samwise",
            "Trinity", "Umma", "Vincent", "Wanda"
        };

    public void WarmUp(AppendText instance)
    {
        instance.Append(Names);
    }

    public void Shutdown(AppendText instance)
    {
    }

    public void Run(AppendText instance, int iterationCount)
    {
        for (int i = 0; i < iterationCount; i++)
        {
            string result = instance.Append(Names);
        }
    }

    public IEnumerable<int> Iterations
    {
        get { return new[] {1000, 10000}; }
    }
}

StringBuilderAppendText.cs

public class StringBuilderAppendText :
    AppendText
{
    public string Append(params string[] args)
    {
        var builder = new StringBuilder();

        for (int i = 0; i < args.Length; i++)
        {
            builder.Append(args[i]);
        }
        return builder.ToString();
    }
}