Unicode operators

[Ary Borenszweig]

Robert Fraser escribió:
> Andrei Alexandrescu wrote:
>>> I don't know about you, but to me 'and' and 'or' make for much more
>>> readable boolean expressions than the standard mathematical symbols ^
>>> and v.  Heck, && and || are more readable to me than the math symbols.
>>
>> Hm, in my experimental emacs shenanigans I had && displayed as a wedge 
>> and || displayed as a vee and heck do they look good.
> 
> I'm sure it has to do with what you're used to looking at. I forget 
> which one is which (heck, I was forgetting which was which even when I 
> was taking a logic class). However, & for "and" has a precedent in 
> natural language. | for "or" is a bit out there, but at least it looks 
> significantly different than &, which cannot be said about ^/v.

You can remember those symbols by remembering that U is Union, and 
"inverted U" is intersection. Now U points to the same place as v, and 
"inverted U" points to the same place as ^, and "union/or", 
"intersection/and" are similar concepts.