FWIW, there are better ways to do what concatenation does… 90% of the time? Not that it’s wrong but that there are cleaner ways that are more flexible and easier to build on or manipulate or test or pass around; print join " ", @strings; for example v $string .= $_ . " " for @stuff.

There are no good or bad operators but, for me, string concatenation, while it is naturally the way a lot of think/code at first, is code smell most of the time.