How to concatenate variables in Perl

Question

Is there a different way to concatenate variables in Perl?

I accidentally wrote the following line of code:

print \"$linenumber is: \\n\" . $linenumb         


        

Answer 1

In Perl any string that is built with double quotes will be interpolated, so any variable will be replaced by its value. Like many other languages if you need to print a $, you will have to escape it.

print "\$linenumber is:\n$linenumber";

OR

print "\$linenumber is:\n" . $linenumber;

OR

printf "\$linenumber is:\n%s", $linenumber;

Scalar Interpolation