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Re: unset does not act as expected on namerefs
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From: |
Chet Ramey |
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Subject: |
Re: unset does not act as expected on namerefs |
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Date: |
Sat, 06 Jun 2015 12:47:20 -0400 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
On 6/2/15 11:37 AM, Greg Wooledge wrote:
> Ksh's nameref is completely different. With one of ksh's two different
> kinds of functions, you actually CAN use ksh nameref to pass a value
> back to the caller without variable name collisions.
In my opinion, the most interesting thing about ksh93's namerefs is that
they change ksh to allow dynamic scoping and give funtions access to a
calling function's local variables. ksh93 doesn't normally allow that,
and David Korn was very vocal about the superiority of ksh93's static
scoping.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/