John Cowan <co...@ccil.org> writes: > On Wed, Oct 6, 2010 at 8:58 AM, Felix > <fe...@call-with-current-continuation.org> wrote: > >> - the `regex' library unit has been removed and is separately >> available as an extension which should be fully backwards- >> compatible >> - `irregex' is now a core library unit and replaces the >> `regex' API > > I understand the merits of reducing core dependencies, but have > performance comparisons been made? The last I heard, irregex was > *much* slower than regex.
The switch to irregex was made a long time ago - this new change is just replacing the API with the irregex API. Not only does this remove a needless wrapper layer, but the irregex API provides more fine grained control for performance. Irregex is also asymptotically faster than PCRE, so despite more constant overhead can run arbitrarily faster in certain cases. Also, as Peter says irregex performance was improved a lot recently, and will continue to improve. It's the core regex library for Chicken and Jazz Scheme and a number of other projects, so it gets a lot of attention. -- Alex _______________________________________________ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
