alt Hacker News> I recently launched a text editor for iOS that uses TextKit 2 and is highly performant with files of 5,000 lines (I tested with Moby Dick from Project Gutenberg)
I'm so confused by this comment. 5,000 lines is an absolutely minuscule size. Even the file you tested with is longer than that -- I'm seeing > 22,000 lines in [1]. Even Window's built-in Notepad doesn't flinch when opening something that small.
Text viewers need to handle files that are two orders of magnitude larger, at least. I easily have JSON files that are hundreds of thousands of lines long, and CSV & log files that are even longer.
I'm going from memory here, time marches on never-ending, so please forgive me. I conflated two things: my performance test results are from the first 5,000 lines of Moby Dick. Why 5,000? One user has a 5,000 line taskpaper note file. But the whole 22,000 line book loaded and scrolled and edited just fine (after I fixed some bad assumptions that resulted in bad code). On iOS, I think if you're working on a file of 5,000 lines then something might be wrong, and if you're working on a file of 22,000 lines well I don't know what to say.