"The placement of a sub is important only when you call it without parentheses, ..."
I disagree with the inclusion of the word only in that statement.
Here's a situation where placement is important when parentheses are used:
$ perl -wE '
sub meaning () { 42 }
say meaning();
'
42
$ perl -wE '
say meaning();
sub meaning () { 42 }
'
main::meaning() called too early to check prototype at -e line 2.
42
You can, of course, predeclare and leave the definition for later:
$ perl -wE '
sub meaning ();
say meaning();
# ... later in code with other subroutine defintions
sub meaning () { 42 }
'
42
-
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.
|