Folks, I have to parse just over a million lines of text as quickly as possible. I'm using a Regex instance with a simple pattern (no backtrack or the like) and it's taking from 1 to 2 seconds, which my colleague says is too slow.
Since it's a .NET 6 library I was keen to use the Span<> overloads of Regex.Match which should perform much better due to reduced allocations, but I can't find them. I know there was a big release of Span overloads recently, but didn't it make it into Regex? FYI -- My colleague used to parse the lines the old C-style way using a for (int =0; i<line.Length; i++) and looking for delimiters and *eating* substrings as he went. That 1970s style code was hard to read, but it performed about 10x faster than a Regex. I thought my demo with a Regex.Match and just a few lines of code would be faster, but now I have egg on my face. That's why I was looking for the Span overloads to save my reputation. *Greg K*
