This question is more appropriate for help-bash than bug-bash.
On Tue, Sep 17, 2024, at 2:21 AM, William Park wrote:
> Hi all,
>
> Is there fast way of splitting and joining of strings in the recent Bash
> versions?
Define "fast".
> For splitting, I'm aware of
> old="a,b,c"
> IFS=, read -a arr <<< "$old"
>
> For joining,
> new=$(IFS=,; echo "${arr[*]}")
> or
> new=$(IFS=,; echo "$*")
A joining alternative that avoids subshells:
printf -v new '%s,' "${arr[@]}"
new=${new%?}
Another:
strjoin() {
local IFS=$1
shift
REPLY=$*
}
strjoin , "${arr[@]}"
new=$REPLY
--
vq
