Adding Unicode operators to D [use cases]

[Andrei Alexandrescu]

Sergey Gromov wrote:
> Don wrote:
>> If you could completely ignore keyboard and display issues, and use any
>> unicode character as an operator, which ones would you actually use?
> 
> I'd use dot "⋅" and cross "×" products for 3D, union "∪" and
> intersection "∩", subset "⊂" and superset "⊃" and their negative forms.
>  I don't think I'd use anything else.
> 
> Well, comparisons look better when converted into appropriate unicode.

In my opinion, a workable feature is this:

* Functions can be defined with a leading backspace. They will be usable 
with the infix notation.

* There is a way of specifying that precedence of a function defined as 
above is the same as precedence of a built-in operator.

* Functions of which name is the same as an HTML entity name for a 
symbol can be replaced with the actual symbol.


Andrei