in reply to Re^3: Why can't I use s///
in thread Why can't I use s///

omg it works!

thank you! I'd buy you a digital beer.

Anyway I think I found out the reason.

my $text="../files/jack/2012/derpone.pdf";
$text = basename($text);
my $cgi = CGI->new; #Instantiate a CGI class
print $cgi->header, # First we create a header
$cgi->start_html('My first Perl website'), # Begin HTML page
$cgi->h1('Success'), # create the Tag <h1>TEXT</h1>

$cgi->p($text),

[download]

This code works, the second one doesn't


my $cgi = CGI->new; #Instantiate a CGI class
print $cgi->header, # First we create a header
$cgi->start_html('My first Perl website'), # Begin HTML page
$cgi->h1('Success'), # create the Tag <h1>TEXT</h1>
my $text="../files/jack/2012/derpone.pdf";
$text = basename($text);
$cgi->p($text),

[download]

It seems I can't initialize variables while printing HTML

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Re^5: Why can't I use s///
by linuxer (Curate) on May 08, 2013 at 21:52 UTC

    What do you mean with "does not work"?

    Any errors? Which ones? Which messages? Any warnings? Which ones? Please be more specific with your error descriptions.

    Spend some spaces, so you can visually separate inline comments from code, this may help to better see the "error"... 

    my $cgi = CGI->new;                                   # Instantiate a 
+CGI class
print $cgi->header,                                   # First we creat
+e a header
$cgi->start_html('My first Perl website'),            # Begin HTML pag
+e
$cgi->h1('Success'),                                  # create the Tag
+ <h1>TEXT</h1>
my $text="../files/jack/2012/derpone.pdf";
$text = basename($text);
$cgi->p($text),

    [download]
    Your are printing a list of items:
    • result of $cgi methods: header, start_html, h1
    • result of a string-assignment to the scalar $text (oops!?!)

    And the print is done, as the semicolon behind my $text = "...path" terminates print's argument list.

    The final $cgi->p($text); is executed in void context and therefor not printed!

    Watch out where your commas and semicolons are!

    But apart from the technical issue:

    Why do you want to mix printing and (initializing and ) processing data?

    Better do it step by step:

    1. Prepare your data,
    2. print your data.

    Although one could mix it, I don't think it's a good idea to do so.

    Keep it the way as your first example shows it (but spend some spaces as well).

    edit: fixed ordered list

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Re^5: Why can't I use s///
by Anonymous Monk on May 09, 2013 at 03:14 UTC
[reply]

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