Re: How to test if a procedure is defined ?

Newsgroups	comp.lang.postscript
From	Peter Billam <peter@www.pjb.com.au>
Subject	Re: How to test if a procedure is defined ?
References	<slrnnibqmm.54q.peter@box8.pjb.com.au> <ng5271$ufi$1@dont-email.me> <slrnnida14.1og.peter@box8.pjb.com.au> <79ad39d3-c85b-45ad-a352-ec1828161d9b@googlegroups.com>
Message-ID	<slrnnidqhp.2s3.peter@box8.pjb.com.au> (permalink)
Date	2016-05-02 05:48 +0000
Organization	Unlimited download news at news.astraweb.com

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On 2016-05-02, luser- -droog <mijoryx@yahoo.com> wrote:
>> > Peter Billam wrote:
>>   /randomrgb where not { (/home/pjb/ps/lib/colours.ps) run } if
>
> `where` returns the dict in the true case,

Ah... indeed.

> so you probably want something more like
>  /randomrgb where { pop }{ (/home/pjb/ps/lib/colours.ps) run } ifelse

Thanks :-)
Peter

-- 

Peter Billam    www.pjb.com.au    www.pjb.com.au/comp/contact.html

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Thread

How to test if a procedure is defined ? Peter Billam <peter@www.pjb.com.au> - 2016-05-01 11:39 +0000
  Re: How to test if a procedure is defined ? Martin Leese <please@see.Web.for.e-mail.INVALID> - 2016-05-01 08:04 -0600
    Re: How to test if a procedure is defined ? Peter Billam <peter@www.pjb.com.au> - 2016-05-02 01:06 +0000
      Re: How to test if a procedure is defined ? luser- -droog <mijoryx@yahoo.com> - 2016-05-01 19:45 -0700
        Re: How to test if a procedure is defined ? Peter Billam <peter@www.pjb.com.au> - 2016-05-02 05:48 +0000

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