Thanks a lot for your help! Regards, Pedro Borges El 20/2/2023 a las 4:38 p. m., Viktor Dukhovni escribió:
On Mon, Feb 20, 2023 at 03:58:10PM -0400, Pedro B. wrote:
You made me realize that I can use "word8 _a" instead of "char 'a'" and almost have no need for the Char8 combinators. I'll probably do that and only use "decimal" from Char8 to parse integers, which I need to parse line ranges such as "2,10".
That's the sort of thing I was hinting at.
I still have a doubt though: given that I only match specific characters generated by diff, do I gain something by not using Char8? Performance, perhaps?
In most case performance gains are likely to be marginal at best. The compiler should be able to optimise away most of the possible overhead of Char<->Word8 coversions, but perhaps in some corner cases you might see better performance. Write maintainable code, and only if profiling shows opportunities for meaningful performance gains consider optimisations that might make the code less clear.