type class Boolean

[Ben Franksen]

Thanks!

Am 27.12.20 um 22:05 schrieb Oleg Grenrus:
> Wikipedia [1] has references
> 
>> Bob Bemer added the \ character to the ASCII character set on
> September 18, 1961,[3][4] as the result of character frequency studies.
> In particular, the \ was introduced so that the ALGOL boolean operators
> ∧ (and) and ∨ (or) could be composed in ASCII as /\ and \/
> respectively.[4][5]
> 
> - Oleg
> 
> [1] https://en.wikipedia.org/wiki/Backslash
> [3] http://www.thocp.net/biographies/bemer_bob.htm
> [4]
> https://web.archive.org/web/20130119163809/http://www.bobbemer.com/BACSLASH.HTM
> [5]
> https://web.archive.org/web/20090604210339/http://home.ccil.org/~remlaps/www.bobbemer.com/BRACES.HTM
> 
> On 27.12.2020 12.03, Ben Franksen wrote:
>> Am 23.12.20 um 22:40 schrieb Jon Purdy:
>>> otherwise I like ‘(/\)’ and ‘(\/)’—which, after all, are the very
>>> reason the backslash was added to ASCII in the first place.
>> Interesting. Out of curiosity: do you have a reference for this?
>>
>> Cheers
>> Ben
>>
>> _______________________________________________
>> Libraries mailing list
>> Libraries at haskell.org
>> http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries
> _______________________________________________
> Libraries mailing list
> Libraries at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries
>