Additive Operators
Strangely enough, Perl also has the customary + (addition) and - (subtraction) operators. Both operators convert their arguments from strings to numeric values if necessary and return a numeric result.
Additionally, Perl provides the operator, which does string concatenation. For example:
Note that Perl does not place a space between the strings being concatenated. If you want the space, or if you have more than two strings to concatenate, you can use the$almost = "Fred" . "Flintstone"; # returns FredFlintstone
join operator, described in "Functions". Most often, though, people do their concatenation implicitly inside a double-quoted string:
$fullname = "$firstname $lastname";