Addition in concatenation problem

[bacoms]

As a relative newbie to perl and CGI, can someone please tell me why the following resolves ok;

use constant DATEWIDTH => 86;
use constant PRICEWIDTH => 60;
my($earliestWidth) = DATEWIDTH + PRICEWIDTH;

print "earliest-cell {width: " . $earliestWidth . "px;}\n";
print "date-cell {width: " . DATEWIDTH . "px;}\n";
print "price-cell {width: " . PRICEWIDTH . "px;}\n";

but the following doesn't;

print "earliest-cell {width: " . DATEWIDTH + PRICEWIDTH . "px;}\n";

Running cgi script in command prompt generates error;

Argument "earliest-cell {width: 86" isn't numeric in addition (+) at fakedheader.cgi line 39.
60px;}

How come I can add the two constants together in the assignment statement but not in the concatenation. (It's nothing to do with constants as I get the same error when I change the constants declarations to variables.)

I suspect this is something simple that I have forgotten or misunderstood but it has got me baffled (but it is Monday morning).

Thanks in advance for any help.

Bryan

 

[feherke]

Hi

print "earliest-cell {width: " . [red]([/red]DATEWIDTH + PRICEWIDTH[red])[/red] . "px;}\n";

[gray]# or[/gray]

print "earliest-cell {width: "[red],[/red] DATEWIDTH + PRICEWIDTH[red],[/red] "px;}\n";

Operator Precedence and Associativity

Feherke.

http://rootshell.be/~feherke/

 

[bacoms]

Hi,

I knew it would be something simple. It's all working fine now.

Many thanks for your help.

Bryan