From: Christian Neukirchen <chneukirchen@...>
Date: 2005-09-03T19:37:27+09:00
Subject: Re: nano & mega

Nikolai Weibull <mailing-lists.ruby-talk@rawuncut.elitemail.org> writes:

> gsinclair@gmail.com wrote:
>
>> Dave Burt wrote:
>> > Why foo_p?  What's the p? ZenSpider's ZenTest suggests foo_eh. I could see
>> > maybe _q or _bool. Also I'd prefer _set to _setter.
>> 
>> P is for "predicate".  It's a Lisp or Scheme thing; can't remember
>> which.
>
> Common Lisp.  Scheme uses '?'.  Common Lisp isn't 100% consistent,
> though, as it uses both '-p' and just 'p' as suffixes for predicate
> functions.  Either way, using 'p' is the best suggestion so far,
>         nikolai

<<quote
If the name of the predicate is formed by adding a p to an existing
name, such as the name of a data type, a hyphen is placed before the
final p if and only if there is a hyphen in the existing name. For
example, number begets numberp but standard-char
begets standard-char-p.
--- http://www.cliki.net/Naming%20conventions >>

It's fairly consistent.  (And _p is a good choice for Ruby IMO.)

> Nikolai Weibull
-- 
Christian Neukirchen  <chneukirchen@gmail.com>  http://chneukirchen.org