I was pair programming with the great magician Keith yesterday when he pointed out something interesting when checking if objects or relations exist in a collection.
To check if there were any items present in a collection I would do something like this:
Keith told me to use:
Turns out that the
any? method will perform a
COUNT (*) SQL query where as the
present? method will perform a
SELECT (*) which is infinitely slower than
performing a count.
So from now on i’ll be using the
any? method instead of