Re: No expansions performed while declaring an associative array using a list of keys and values

[Chet Ramey]

On 12/11/20 9:45 AM, Léa Gris wrote:
> Le 11/12/2020 à 14:28, Oğuz écrivait :
> > Nah, this doesn't work either. Would be really useful if it did though.
> >
> >      $ declare -a foo=(1 2 )
> >      $ declare -A assoc=("${foo[@]}" 3)
> >      $ declare -p assoc
> >      declare -A assoc=(["\"\${foo[@]}\""]="3" )
>
> What would have been so useful is expanding mapfile to associative arrays:

This is an interesting idea for a future bash version.

>      key${IFS}value
>
>      declare -A assoc
>      IFS='= ' mapfile -t assoc <<INFILE
>      key1 = value1
>      key2=value2 with spaces
>      INFILE
>
> And some dream of mapping JSON object members to associative arrays:
>      mapfile -j assoc <<JSON
>      {
>        "key1": "value1",
>        "key2": 42,
>        "key3": {
>                  "otherkey": "othervalue"
>        }
>      }
>      JSON

But I'm not really interested in writing a JSON parser and integrating it 
into mapfile. Maybe someone would be interested in writing a loadable
builtin, along the lines of the `csv' loadable builtin in bash-5.1.


--
``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/