Well, the biggest problem with using + for concatenate in Perl is
that it introduces ambiguity. Consider:
print "Enter a number: ";
chomp(my $num1 = <STDIN>);
print "Enter another number: ";
chomp(my $num2 = <STDIN>);
print "$num1 + $num2 is ", $num1 + $num2, "\n";
Right now, the + means numerical addition so Perl converts those
strings read in from STDIN to numbers, adds them, and converts the
result back to a string to print it. In other words, now the operator
(+ or .) imposes context (numeric or string) on its operands. Would
you prefer having to do explicit type declarations or casting to
provide context to the operator?
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||