Benchmarking to the Bottom - Iterating Arrays in .NET

Benchmark_Methods_Arrays.cs

[Benchmark]
public void ForLoop()
{
    for (var i = 0; i < this.N; i++)
    {
        var allocated = $"{this.benchmarkArray[i]}";

        if (allocated == "NotEquals")
        {
            Console.WriteLine(allocated);
        };
    }
}

[Benchmark]
public void ForEachLoop()
{
    foreach (var item in this.benchmarkArray)
    {
        var allocated = $"{item}";

        if (allocated == "NotEquals")
        {
            Console.WriteLine(allocated);
        };
    }
}

[Benchmark]
public void ArrayForEach()
{
    Array.ForEach(this.benchmarkArray, item =>
    {
        var allocated = $"{item}";

        if (allocated == "NotEquals")
        {
            Console.WriteLine(allocated);
        };
    });
}

[Benchmark]
public void GetEnumerator()
{
    var enumerator = this.benchmarkArray.GetEnumerator();

    while (enumerator.MoveNext())
    {
        var allocated = $"{enumerator.Current}";

        if (allocated == "NotEquals")
        {
            Console.WriteLine(allocated);
        };
    }
}

[Benchmark]
public void SpanFor()
{
    var span = this.benchmarkArray.AsSpan();

    for (var i = 0; i < this.N; i++)
    {
        var allocated = $"{span[i]}";

        if (allocated == "NotEquals")
        {
            Console.WriteLine(allocated);
        };
    }
}

[Benchmark]
public void SpanForEach()
{
    var span = this.benchmarkArray.AsSpan();

    foreach (var item in span)
    {
        var allocated = $"{item}";

        if (allocated == "NotEquals")
        {
            Console.WriteLine(allocated);
        };
    }
}