[erlang-questions] Pmods, packages, Unicode source code and column numbers in compiler - what will happen in R16?

Yurii Rashkovskii <>
Wed Oct 17 16:57:59 CEST 2012


I suspect that with your proposal the performance drop will be significant 
as tuple module call handling is done in C these days and according to my 
measurements, it's actually pretty damn fast (I think it's about in the 
neighbourhood of 1% of the time it takes to do the actual call)

So the loss might be significant. Also, removing or having this feature 
doesn't affect you — you don't use it. Why do you want to get rid of 
something you don't use but others do?

On Wednesday, October 17, 2012 4:01:34 AM UTC-7, Loïc Hoguin wrote:
>
> Now what if the tuple call support was removed and was simply replaced 
> in the parse transform by code similar to the following? 
>
> if is_tuple(Var) -> M = element(1, Var), M:fun(); 
>     true -> Var:fun() 
> end 
>
> It would still work, it would cleanup OTP completely, and I don't think 
> the performance loss would be too bad. After all, people caring *this 
> much* about performance wouldn't use tuple calls to begin with, right? 
>
>
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