using System;

var newLine = Consts.NewLine;

_ = GC.GetTotalAllocatedBytes();

var initial = GC.GetTotalAllocatedBytes();

for (int i = 0; i < 100_000; i++)

{

    var line = Consts.NewLine;

}

​

var result1 = GC.GetTotalAllocatedBytes();

​

for (int i = 0; i < 100_000; i++)

{

    var line = Consts.Delim;

}

​

var result2 = GC.GetTotalAllocatedBytes();

​

Console.WriteLine($"{initial} - {result1} - {result2}");

class Consts

{

    public static Span<byte> NewLine => "\n"u8.ToArray() ;

    private static readonly byte[] _delim = { (byte)'\n' };

    public static ReadOnlySpan<byte> Delim => _delim;

}