Re: Associative array keys are not reusable in (( command

[Léa Gris]

Le 11/01/2021 à 15:42, Léa Gris écrivait :
> Declare an integer associative array instead:
>
> echo "$BASH_VERSION"
> > 5.0.17(1)-release
> declare -Ai aa
> x='y[$(date >&2)0]'
> aa[$x]=1
> declare -p aa
> > declare -Ai aa=(["y[\$(date >&2)0]"]="1" )
> aa[$x]+=1
> declare -p aa
> > declare -Ai aa=(["y[\$(date >&2)0]"]="2" )

And forgot one more safe use of arithmetic expression:

safe_arith_index=${x@Q}
declare -p safe_arith_index
> declare -- safe_arith_index="'y[\$(date >&2)0]'"
(( aa[$safe_arith_index]++ ))
declare -p aa
> declare -Ai aa=(["y[\$(date >&2)0]"]="3" )

--
Léa Gris