[erlang-questions] Specs for optional callbacks (try 2)

[Adrian Roe]

Indeed - we have lots and lots of use cases where this would be a major help.  

--  
Adrian Roe
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On Wednesday, 24 September 2014 at 19:10, Darach Ennis wrote:

> +1. This would really help reduce boilerplate and increase documentation of intent.
> Cheers,
> Darach.
> On 24 Sep 2014 18:17, "Jesse Gumm" <gumm@REDACTED (mailto:gumm@REDACTED)> wrote:
> > I would really like to see this as well. I think it's a solid idea.  
> > +1 from me.  
> > -Jesse
> > --
> > Jesse Gumm
> > Owner, Sigma Star Systems
> > 414.940.4866 (tel:414.940.4866) || sigma-star.com (http://sigma-star.com) || @jessegumm  
> > On Sep 24, 2014 11:52 AM, "Loïc Hoguin" <essen@REDACTED (mailto:essen@REDACTED)> wrote:
> > > Hi,
> > >  
> > > I didn't get any reply on my previous question almost 2 years ago here: http://erlang.org/pipermail/erlang-questions/2013-January/071763.html
> > >  
> > > So let me ask again, is there any plans for adding something like -optional_callback that would do the same as -callback except it would not require the callback to be defined? Basically Dialyzer would use it, and the compiler wouldn't fail if the callback is missing.
> > >  
> > > As it stands now I am about to remove most -behavior in Cowboy because they're starting to make little sense because most callbacks become optional. The simplest handler type will have 3 possible callbacks, 2 being optional. The most complex handler type already has 20+ callbacks with only 1 required.
> > >  
> > > Thanks for any reply.
> > >  
> > > --  
> > > Loïc Hoguin
> > > http://ninenines.eu
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