Hi Rick, On Wed, 4 Jul 2018 09:16:19 -0500 Rick T <p...@reason.net> wrote:
> The following line works, even though I forgot to double quote the variable. > > my $student_directory = '/data/students/' . $student_id; > see http://perl-begin.org/tutorials/bad-elements/#vars_in_quotes . Perl often stringifies expressions even outside interpolation, such as when being string-concatenated. > When I noticed this, I thought this was convenient: perl is trying to “do the > right thing.” But I worry that leaving them out may be bad coding practice; > if so, or you see other worthwhile improvements, please let me know. > > More importantly, I wonder how perl knows to do this. Perhaps context > provided by the assignment operator or the concatenation operator? If there > is a general rule on this, it would help me to know more widely when I can > omit double quotes. > > Thanks! > > Rick Triplett -- ----------------------------------------------------------------- Shlomi Fish http://www.shlomifish.org/ First stop for Perl beginners - http://perl-begin.org/ After all is said and done, a hell of a lot more is said than done. — Unclear source, via fortune-mod. Please reply to list if it's a mailing list post - http://shlom.in/reply . -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
