The difference is that one can possibly land you in jail
while the other won't. Or something to that effect.
I'm a particular fan of brackets, even when not strictly
necessary, but I have been warned that this does have
some side-effects on commands that are sensitive to
the calling context. Maybe your biggest fear is only
the Perl Police.
Certain commmands do different things in different
contexts. Consider an example from the above article:
my ($fortune) = `fortune`;
When the backtick detects "array context", it splits
up the lines returned by the command into an array and
returns it. $fortune
then gets the first
element/line and the rest go unassigned.
my $fortune = `fortune`;
In scalar context, the entire result is returned in one
string, meaning that the linefeeds are not split.
Or compare the two here, using the context sensitive localtime
my ($time1) = localtime;
my $time2 = localtime;
print "$time1 / $time2\n";
This prints, for me at least: "42 / Sat Jul 21 03:02:42 2001",
which shows you how important those brackets can be.
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link or
or How to display code and escape characters
are good places to start.