AdventOfCode23/Day9/Parser.cs

using System.Text.RegularExpressions;

namespace Day9;

public partial class Parser
{
    [GeneratedRegex(@".*")]
    private partial Regex LineMatch();
    
    public IEnumerable<Sequence> Parse(string inputFile)
    {
        using var reader = File.OpenText(inputFile);
        
        while (!reader.EndOfStream)
        {
            var line = reader.ReadLine()!;
            var numbers = line.Split(' ').Select(long.Parse).ToArray();
            yield return new Sequence(numbers);
        }
    }
}