Re: [core libraries] Re: Add taggedTrace to Debug.Trace

Almost any formatting will do. At least I never care. I assume those APIs would be used for very ad-hoc use (like the other APIs in Debug.Trace). And debug codes put by such cases are deleted or disabled by NoTrace https://hackage.haskell.org/package/NoTrace package in production. I want handy default functions available without batteries. Detailed formatting for debug messages should be configured by third-parties' logging libraries. 2018年6月8日(金) 4:29 Andrew Martin :

I am -1 on this. Such a function requires making a decision about formatting. What does a user expect from

...

taggedTraceShowId "meganum" (42 :: Int)

Any of these are reasonable:

meganum: 42 meganum [42] [meganum]: 42

In different applications I've worked on, I've wanted different flavors of something like this. Since there's no obvious choice, I don't think base is a good place for such a function.

On Thu, Jun 7, 2018 at 12:59 PM, Ben Gamari wrote:

...

Edward Kmett writes:

...

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.

Right, as I mentioned I'm not sure about the tagging idea. However, I have found things of the form `(a -> String) -> a -> a` handy in the past. Then again, it's pretty trivial to open-code this when needed.

Cheers,

- Ben

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