alternative to readarray, because it does not work on mac os x

Question

I have a varsValues.txt file

cat varsValues.txt
aa=13.7
something=20.6
countries=205
world=1
languages=2014
people=7.2
oceans=3.4

And I wou

Answer 1

You could use a read loop.

while IFS=\= read var value; do
    vars+=($var)
    values+=($value)
done < VarsValues.txt