What different users would do with such a prefix, how to display it, etc. varies just enough that i’m somewhat hesitant to grow the API. I’m a very weak -1. But I’d happily let anybody else on the committee override that if they had a strong preference.
-Edward > On Jun 7, 2018, at 5:40 PM, Ben Gamari <b...@smart-cactus.org> wrote: > > Yuji Yamamoto <whosekitenever...@gmail.com> writes: > >> Nice to meet you, GHC Developers! >> I'm new to contributing to GHC. >> > Hi Yuji! > > Thanks for your proposal. > > I think this is likely best handled by the Core Libraries Committee > (CC'd). Let's see what they say. > > > >> Today let me suggest new APIs of the Debug.Trace >> <http://hackage.haskell.org/package/base-4.11.1.0/docs/Debug-Trace.html> >> module, named: >> >> - taggedTraceShowId :: Show a => String -> a -> a >> - taggedTraceWith :: (a -> String) -> String -> a -> a >> >> These are inspired by Elm's Debug.log >> <http://package.elm-lang.org/packages/elm-lang/core/5.1.1/Debug#log> >> function. >> The prefix "tagged" is named after its argument >> <https://github.com/elm-lang/core/blob/5.1.1/src/Native/Debug.js#L5>. >> >> I mean, these new APIs prepend a string as a tag to the output by >> traceShowId etc. >> It helps us recognize what the printed values stand for. >> I frequently want such functions and write them manually or copy-and-paste >> from the Debug.TraceUtils. >> I'm tired of that. That's why I made this suggestion. >> >> *Comparison with the existing solution* >> >> - Debug.TraceUtils >> >> <http://hackage.haskell.org/package/TraceUtils-0.1.0.2/docs/Debug-TraceUtils.html> >> : >> - Essentially, this suggestion is to add APIs already implemented by >> TraceUtils. >> - As the document of TraceUtils suggests, we can copy and paste the >> functions from its source, but it's still tiresome. >> - Combine Debug.Trace.traceShowId with Debug.Trace.trace: >> - e.g. trace "Tag" $ traceShowId x >> - A bit hard to type. >> - trace always prints a newline, which makes it difficult to tell the >> tags from the printed value. >> >> After receiving some feedback here, I'm going to submit to >> https://github.com/ghc-proposals/ghc-proposals >> Thanks in advance! >> > > Personally, I do like the "With" variant as I regularly find myself > needing things like this. I'm a bit unsure of whether we want to bake > the "tag" notion into the interface, however. > > Cheers, > > - Ben > > -- > You received this message because you are subscribed to the Google Groups > "haskell-core-libraries" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to haskell-core-libraries+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
