How to pass an array to a bash function

Question

How do I pass an array to a function, and why wouldn\'t this work? The solutions in other questions didn\'t work for me. For the record, I don\'t need to copy the array so I don

Answer 1

#!/bin/bash
ar=( a b c )
test() {
    local ref=$1[@]
    echo ${!ref}
}

test ar