Is it this system, Leah? 
http://caml.inria.fr/pub/docs/manual-ocaml-400/manual029.html

 -- John

On Aug 27, 2014, at 3:06 PM, Leah Hanson <[email protected]> wrote:

> I like OCaml's approach, which uses comments above functions/etc, and has a 
> neat plugin system to output them in various formats.
> 
> On Wednesday, August 27, 2014, John Myles White <[email protected]> 
> wrote:
> Ok, thanks for clarifying. I also like the idea of strategically placed 
> comments as automatic documentation.
> 
>  -- John
> 
> On Aug 27, 2014, at 2:54 PM, Job van der Zwan <[email protected]> 
> wrote:
> 
>> Right, that's what I meant with GoDoc being a separate tool: Go is 
>> statically compiled and does not have something like a REPL or runtime 
>> evaluation, so being a separate tool is only logical. In that sense it's not 
>> a comparable situation.
>> 
>> The comments-as-documentation and the conventions used to make it work might 
>> still be worth looking into. 
>> 
>> I personally feel that from the point of view of people using Julia it's a 
>> better option than introducing docstrings - comments are already the 
>> source-level form of documentation-for-humans after all. Introducing 
>> docstrings feels like creating two different options for the same role, 
>> except one is ignored by tools and the other isn't. That just feels 
>> unelegant to me (not the strongest argument, I know), and I worry that code 
>> with both would become visually more noisy.
>> 
>> I just googled for possible reasons for having both docstrings and comments, 
>> and the only argument I found is that one describes the what and the other a 
>> how. GoDoc only counts comments above the package/variable/function 
>> definition as documentation, and ignoring comments inside a function body or 
>> struct definition. Since the former typically documents the what and the 
>> latter the how anyway, that distinction automatically emerges through 
>> convention.
>> 
>> Of course, if "not discarding comments during compilation" would require a 
>> major overhaul to the compiler and docstrings are technically much easier to 
>> introduce I can understand if that option is more appealing - a less elegant 
>> feasible solution is better than an inelegant infeasable one. And perhaps 
>> there are other arguments in favour of having both docstrings and comments 
>> that I'm not aware of?
>> 
>> On Tuesday, 26 August 2014 17:34:24 UTC+2, Stefan Karpinski wrote:
>> To clarify – I meant that I like the style of GoDoc, not the fact that you 
>> run the tool as a separate pass. That doesn't strike me as completely out of 
>> the question, but wouldn't be optimal.
>> 
>> 
>> On Tue, Aug 26, 2014 at 11:32 AM, John Myles White <[email protected]> 
>> wrote:
>> No, I was talking about what I understood to be a design principle of GoDoc: 
>> doc generation and parsing occurs at doc-gen time, not at run-time.
>> 
>> Yes, you would have to make comments non-ignorable to get this to work.
>> 
>>  — John
>> 
>> On Aug 26, 2014, at 12:44 AM, Job van der Zwan <[email protected]> wrote:
>> 
>>> On Tuesday, 26 August 2014 00:04:41 UTC+2, John Myles White wrote:
>>> The issue is that you want to have all code documentation show up in REPL. 
>>> In the GoDoc approach, this might require an explicit "build" step -- which 
>>> is a non-trivial cost in usability.
>>> 
>>>  -- John
>>> 
>>> I assume you talking about GoDoc as a tool?
>>> 
>>> In case you are referring to comments as the source of documentation 
>>> instead of docstrings: I assume comments are now simply discarded during 
>>> compilation, making it impossible to use them for documentation, but if 
>>> that could be changed they should be just as valid as the format for 
>>> documentation, right?
>> 
>> 
> 

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