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

Variable interpolation occurs when you use double quotes. So, special characters need to be escaped. In this case, you need to escape the $:

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

It can be rewritten as:

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

To avoid string interpolation, use single quotes:

print '$linenumber is: ' . "\n$linenumber";  # No need to escape `$`