Unicode function name? ∩

[Tofu Ninja via Digitalmars-d-learn]

On Sunday, 28 August 2016 at 05:28:17 UTC, rikki cattermole wrote:
> On 28/08/2016 5:21 PM, Tofu Ninja wrote:
>> ...
>
> Try Ÿ.

Yeah Ÿ and π both work but ∩ does not. I think I found my answer 
though...
http://dlang.org/spec/lex.html#IdentifierChar
> Identifiers start with a letter, _, or universal alpha, and are 
> followed by any number of letters, _, digits, or universal 
> alphas. Universal alphas are as defined in ISO/IEC 9899:1999(E) 
> Appendix D. (This is the C99 Standard.) Identifiers can be 
> arbitrarily long, and are case sensitive. Identifiers starting 
> with __ (two underscores) are reserved.