There's no difference, since an allocated hash is already set up for being blessed.
push @l,{} for 1..3e7; # allocate 3 mill. anon hashes
system "ps -o vsz= -p $$"; # get memory usage of process
$_ = bless $_ for @l; # bless each hash into 'main'
system "ps -o vsz= -p $$"; # again get memory usage
__END__
2650968
2650968
which shows: making an anonymous hash into an object means blessing it into a namespace. That operation signifies no overhead as far as memory is concerned, since the namespace bits are already allocated in the first place.
update: added comments
update: AnomalousMonk correctly noted that 3e7 for 3 millions is wrong by an order of magnitude. Who else noticed? ;)
perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'
-
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>
<u> <ul>
-
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
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|
