arc tangent - comp.lang.lisp

Message from discussion arc tangent

tim Josling

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More options Jan 20, 1:18 am

Newsgroups: comp.lang.lisp

From: tim Josling <tejgcc_nos...@westnet.com.au>

Date: Sun, 20 Jan 2008 06:18:22 -0000

Local: Sun, Jan 20 2008 1:18 am

Subject: Re: arc tangent

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On Sat, 19 Jan 2008 20:00:21 -0800, funkyj wrote:
> On Jan 19, 4:09 pm, tim Josling <tejgcc_nos...@westnet.com.au> wrote:

>> The parenthesis notation was supposed to be a temporary solution for
>> lisp until a more algebraic notation that was good enough could be found.

>> Some attempts at this include

>> - Dylan*
>> - Arc(*?)
>> - Haskell**
>> - Within lisp

> I like parenthesis. What is wrong with them?

Nothing is wrong with them, in most cases.

Sometimes they are over the top. FORMAT is an example where using
parentheses would be over the top, also loop is better than lots of
parentheses. Maybe also arithmetic expressions - look at all the infix
projects.

I recently wrote a lexical analyser. I used nested expressions for
defining the regular expressions and it was kind of klunky. So maybe
regexes are another example where parentheses are too cumbersome.

Tim Josling

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