Interpolation using double quotes, for example,
(see
Quote and Quote like Operators)
can be used to concatenate 2 (or more) scalar variables
into a 3rd scalar variable:
my $s1 = 'Perl';
my $s2 = 'Monks';
my $s3 = "$s1$s2";
print "$s3\n";
# $s3 contains 'PerlMonks'
or using this syntax:
my $s3 = "${s1}${s2}";
Interpolation of array variables can also be performed
to concatenate all element of the array into a string. It is
necessary to unset the LIST_SEPARATOR ($")
special variable, and it is good practice to localize this change to its
own block:
{
undef $";
my @strs = 'a' .. 'e';
my $s4 = "@strs";
print "$s4\n";
# $s4 contains 'abcde'
}