Unicode operators and precedence?

[Dominikus Dittes Scherkl]

On Saturday, 31 October 2020 at 11:32:09 UTC, Ola Fosheim Grøstad 
wrote:
> If D had more operators, specifically the ones in the Unicode 
> spec. Which ones should be available and what would the 
> precedence order be in relation to the existing ones?
>
> Suggestions:
>
> opUnary!"√"
This should also be binary (to calculate the n.th root, with n an 
integer >= 2)
The priority should be rather high.

> opBinary!"·"
Don't we already have the dot operator (with much too many 
meanings)?
If you mean some different character, I would recommend to 
refrain from it as it is visual too similar.

> opBinary!"≈"
> opBinary!"≉"
> opBinary!"⊂"
> opBinary!"⊃"
> opBinary!"⊄"
> opBinary!"⊅"
> opBinary!"⊆"
> opBinary!"⊇"
> opBinary!"⊈"
> opBinary!"⊉"
> opBinary!"∈"
> opBinary!"∉"
All the comparison operators should have a very low priority, 
equal to those of >, <, != etc.

> opBinary!"✕"
> opBinary!"⊗"
> opBinary!"⊘"
> opBinary!"⊙"
same as *, / ("point" arithmetic)

> opBinary!"⊕"
> opBinary!"⊖"
same as +, - ("stroke" arithmetic)

> opBinary!"∩"
> opBinary!"∪"
same as &, |, ^ ("set" arithmetic - bitwise is only a special 
kind of set)