[Haskell-cafe] question regarding the $ apply operator

[Maciej Marcin Piechotka]

On Sat, 2011-07-23 at 06:37 -0700, Ting Lei wrote:
> I know the Reverse Polish is not a couple of hundred years old. 
> I have an impression of reading something about people writing natural 
> deduction systems using only dots in place of parenthesis. And it is 
> said that it was "natural" in those pre-historic times.
> 
> That's also why I had this (mis-)conception that ($) can be used to achieve
>  something similar. It would be marginally interesting, since it saves us 
> one character in the mental stack. I still remember looking at the parentheses
>  in a lisp program.
> 
> Anyways, thanks for the clarifications.

Hmm. Maybe highlighting the parenthesis would help in more complicated
expressions. I.e. the matching parenthesis are coloured in the same
colour.

For example

(((()())()))
rgbyyccbppgr

r - red
g - green
b - blue
c - black
p - pink

Regards
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