Perl "flattens" arrays and hashes passed as parameters to a sub into a list of scalar values (see the perlsub Description section, paragraph two. In your case it is not possible for the sub to tell the difference between a call with no parameters and a call containing one or more empty array and empty hash parameters.
Perhaps a solution is to use a "sayArray" sub that does the multi-line thing and use Perl's "say" in other cases? That has the advantage that it clearly signals to the user that something special is happening in the array case.
Perl's built in "say" doesn't need any magic for handling a "no argument" case. It just does what print does (in that case it prints nothing) then prints a newline, which is what it always does.
Optimising for fewest key strokes only makes sense transmitting to Pluto or beyond
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
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:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, 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, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.