For my application (and for Decimal also) the same precedence as 
traditional math would be the key success factor of the new operators.

Lower precedence (as now for custom operators) would be counter-intuitive, 
cause hardly detectable errors in calculations
and lead to excessive use of brackets, because a <+> b<*>c (or a + b<*>c, 
as in my case) would actually work like (a + b)<*>c, not like a + (b<*>c), 
as one would expect by default.


On Thursday, May 17, 2018 at 3:37:25 PM UTC+4, José Valim wrote:
>
> It would but it is worth saying we are adding a new rule that we don't 
> have right now. Today all custom operators currently have the same 
> precedence:
>
>
> https://github.com/elixir-lang/elixir/blob/master/lib/elixir/src/elixir_parser.yrl#L68
>
> *José Valimwww.plataformatec.com.br 
> <http://www.plataformatec.com.br/>Founder and Director of R&D*
>
> On Thu, May 17, 2018 at 1:26 PM, Michał Muskała <[email protected] 
> <javascript:>> wrote:
>
>> On 17 May 2018, 13:13 +0200, José Valim <[email protected] <javascript:>>, 
>> wrote:
>>
>> Michał, I think the issue with your proposed approach is precedence. <+> 
>> and <*> need to have different precedences and where should we put those 
>> operators compared to all others?
>>  
>>
>>
>>
>> That's a good point. What if we put them at the same level as the regular 
>> operators? Would that work?
>>
>> Michał.
>>
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