For extra credit, explain why it doesn't print "23First1Second1" - which would seem to be the most obvious result.
Because the arguments to print are all evaluated first, then printed. ie, it's effectively:
@args = (2,3,first,second);
print @args;
So 'first' and 'second' are run (generating output), before the print command w/ the list is performed.
Similarly, foreach (&func1, &func2) { ... } will run both 'func1' and 'func2' before starting the loop: foreach ( &func1, &func2 ) { print "Looping : $_"; }
sub func1 { print "func1 called\n"; return "func1 return val\n"; }
sub func2 { print "func2 called\n"; return "func2 return val\n"; }
-
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.
|