Re: [Help-bash] Fastest way to join an array into a string

[Peng Yu]

It seems that this will be slower as it involves many string
replacement operations, whereas my version does not involve any string
replacement.

> # https://stackoverflow.com/a/17841619/1236063
> # $1 is the delimiter
> # $2-n are the args to join
> underpin::join_by() {
>   local delimiter=$1
>   shift
>   echo -n "$1"
>   shift
>   # inserts the delimiter at the beginning of each arg
>   printf '%s' "${@/#/$delimiter}"
> }

-- 
Regards,
Peng