join in zsh

Unlike the join utility which make a join similar to SQL ones. Here is a function to make the same work as the join function in javascript, Perl or Python:

> join ';' 'hello world!' "I'm here!" "I'm happy"

hello world!;I'm here!;I'm happy

Here is a short solution:

function join {
    local res=""
    if (($#>0)); then
        local sep="$1"
        shift
        if (($#>0)); then
            res=$1
            shift
            while (($#>0)); do
                res=$res$sep$1
                shift
            done
        fi
    fi
    print $res
}

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