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Re: Passing optional parameters through a wrapper routine

Subject: Re: Passing optional parameters through a wrapper routine
From: bowman(at)null.tamu.edu (Kenneth P. Bowman)
Date: Tue, 08 Feb 2000 18:29:08 -0600
Newsgroups: comp.lang.idl-pvwave
Organization: Posted via Supernews, http://www.supernews.com
References: <bowman-0802001505360001@bowman.tamu.edu> <MPG.130a39952208d999989a1f@news.frii.com>
Xref: news.doit.wisc.edu comp.lang.idl-pvwave:18348

In article <MPG.130a39952208d999989a1f@news.frii.com>, davidf@dfanning.com
(David Fanning) wrote:

> Hard to know what TVRD is doing

If a program with optional parameters did something like this:

PRO OPT_PARAM, p1, p2, p3

IF (N_PARAMS() EQ 2) OR (N_ELEMENTS(p3) EQ 0)) THEN 
   ... do the default thing for p3
ENDIF

then it would handle "wrapping", no?

Ken

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