opConcatAll?

[Ben Jones]

On Friday, 3 July 2020 at 18:07:08 UTC, Steven Schveighoffer 
wrote:
> That's what's already done today.
>
> The idea here is to pass all the operations and parameters at 
> once. There are actually advantages in some cases to have the 
> entire expression, as some things could be optimized by 
> reordering operations (in a valid way).
>
> The further question of this subthread is -- can we loosen some 
> of the precedence rules so this provides more capabilities, or 
> would it be crippled by enforcing precedence rules?
>
> -Steve

I think grouping all operations with the same precedence using 
your new nAryOp idea is a good compromise.  If you need to mess 
with precedence rules, then you can write expression templates to 
do so.

I imagine the most common case is string concatenation with a 
bunch of strings which that approach would handle.

Example:

a + b - c*d/e would become

a.opNaray!(["+", "-"])(a, b, c.opNary!(["*", "/"])(c, d, e))