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Re: Functions and arrays [message #7579 is a reply to message #7566]

Thu, 05 December 1996 00:00

greenwoodde
Messages: 10
Registered: October 1996

Junior Member

In a previous article, William Clodius <wclodius@lanl.gov> wrote:

> Allowing '[]' to replace '()' may be a good idea, but it can provide a
> maintenance problem for old code.

Please don't underestimate the problem of maintaining old code. We have
some recent experience with this. Back in the dark ages - before IDL
even had version numbers - we wrote an external library. Then IDL 2
came along and we didn't have the time to update our library. With the
help of RSI we've now done that, but the result is that we effectively
went from IDL "v1" to v4 in one jump. Because several non-compatible
changes were introduced in the meantime we've had a number of unpleasant
surprises when people tried to dust off old code. In fact, I have to
maintain a copy of "v1" just so we can run that old code :-(

Now, personally I like the idea of replacing "()" with "[]" for arrays.
My suggestion would be to introduce "[]" as an *alternate* way of
specifying arrays. In fact, it could be documented as the *preferred*
way - to avoid the issues that started this thread.

Dave
--------------
Dave Greenwood Internet: Greenwoodde@ORNL.GOV
Oak Ridge National Lab %STD-W-DISCLAIMER, I only speak for myself

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[Message index]

		Re: Functions and arrays By: David R. Klassen on Sat, 07 December 1996 00:00
		Re: Functions and arrays By: Tim Patterson on Fri, 06 December 1996 00:00
		Re: Functions and arrays By: haimov on Fri, 06 December 1996 00:00
		Re: Functions and arrays By: steinhh on Fri, 06 December 1996 00:00
		Re: Functions and arrays By: greenwoodde on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: William Clodius on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: thompson on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: Mirko Vukovic on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: brian.jackel on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: Anonymous on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: llobet on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: Peter Mason on Thu, 05 December 1996 00:00
		Re: Functions and arrays By: thompson on Wed, 04 December 1996 00:00
		Re: Functions and arrays By: steinhh on Wed, 04 December 1996 00:00
		Re: Functions and arrays By: gunter on Wed, 04 December 1996 00:00
		Re: Functions and arrays By: rigby on Wed, 04 December 1996 00:00

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