Question

I have some code that looks like

my ($ids,$nIds);
while (<myFile>){
    chomp;
    $ids.= $_ . " ";
    $nIds++;
}

This should concatenate every line in my myFile, and nIds should be my number of lines. How do I print out my $ids and $nIds?

I tried simply print $ids, but Perl complains.

my ($ids, $nIds)

is a list, right? With two elements?

Answer 1

print "Number of lines: $nids\n";
print "Content: $ids\n";

How did Perl complain? print $ids should work, though you probably want a newline at the end, either explicitly with print as above or implicitly by using say or -l/$\.

If you want to interpolate a variable in a string and have something immediately after it that would looks like part of the variable but isn’t, enclose the variable name in {}:

print "foo${ids}bar";