Span split benchmark

Program.cs

using System;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

namespace SpanSplit;

public class SplitTest
{
    public static string input = "asasdfhsjkdfsfh asdl;fkjasldfjasdfasdfshadjfaskldhfasdwewehfefhhfsjkdh";

    [Benchmark]
    public string[] SimpleSplit()
    {
        return input.Split();
    }

    [Benchmark]
    public string[] LimitSplit()
    {
        return input.Split(" ", 2);
    }

    [Benchmark]
    public string[] SpanSplit()
    {
        var span = input.AsSpan();
        var elementIndex = span.IndexOf(" ");
        return new[]
        {
            span.Slice(0, elementIndex).ToString(),
            span.Slice(elementIndex + 1, span.Length - 1 - elementIndex).ToString()
        };
    }
}

public class Program
{
    static void Main(string[] args)
    {
        var summary = BenchmarkRunner.Run(typeof(Program).Assembly);
    }
}