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Re: Use of $@
From: |
Chet Ramey |
Subject: |
Re: Use of $@ |
Date: |
Thu, 23 Feb 2023 10:03:41 -0500 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 |
On 2/23/23 7:29 AM, Christof Warlich wrote:
... but (to me, unexpectedly) the following does not work:
$ a=(hi ho)
$ f() for i in "${!@}"; do echo $i; done
$ f "${a[@]}"
bash: hi ho: invalid variable name
Wouldn' it make sense to make "${!a[@}" and "${!@}" behave similar in
some future version of bash?
It's not very useful. The value of ${!name[@]} is twofold: indexed arrays
can be sparse, and associative arrays have arbitrary keys. Neither of
those is true of the positional parameters. The indices always go from
1 (or 0) to $#, consecutively. Why do you need a different expansion to
get that?
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/
- Re: Use of $@, (continued)
- Re: Use of $@, Chris F.A. Johnson, 2023/02/21
- Re: Use of $@, alex xmb ratchev, 2023/02/21
- Re: Use of $@, Greg Wooledge, 2023/02/21
- Re: Use of $@, Greg Wooledge, 2023/02/21
- Re: Use of $@, alex xmb ratchev, 2023/02/21
- Re: Use of $@, Kerin Millar, 2023/02/21
- Re: Use of $@, Greg Wooledge, 2023/02/21
- Re: Use of $@, Chet Ramey, 2023/02/21
- Re: Use of $@, Christof Warlich, 2023/02/23
- Re: Use of $@, alex xmb ratchev, 2023/02/23
- Re: Use of $@,
Chet Ramey <=
Re: Use of $@, alex xmb ratchev, 2023/02/21
Re: Use of $@, Greg Wooledge, 2023/02/21