Hello!
Am Tue, 20 Oct 2020 00:58:36 -0700 schrieb L A Walsh <b...@tlinx.org>:
> There's got to be an easier way to do this, but not remembering or finding
> it:
>
> First tried the obvious:
> declare -a ar1=([0]="1" [1]="2" [2]="3" [3]="44")
> an=ar1
> echo ${#!an[@]}
> -bash: ${#!an[@]}: bad substitution
>
> This works but feels kludgy
>
> an=ar1
> eval echo \${#$an[@]}
> 4
I'm not quite sure what exactly you intend, but if you use
declare -n an=ar1
instead of an=ar1, then
echo ${#an} ${an[3]}
will work as I expect.
Best regards
Martin
