.= operator 1

[theEclipse]

just wondering what the .= operator does

I have seen it used like this:

$some_string .= 'text'
Robert Carpenter
questions? comments? thanks? email me!
linkemapx@hotmail.com
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AIM & MSN: robacarp

 

[footpad]

theEclipse,

It's shorthand for concatenation. For example:

if ( &something ) {
   $foo = $foo . 'bar';
}

Can be written as:

if ( &foo() ) {
   $foo .=  'bar';
}

In my stuff, I tend to use it for creating lists, such as errors detected in online forms.

For more information, please see

perldoc perlop

and search for "Assignment Operators".

Hope this helps...

-- Lance

 

[goBoating]

another typical example.....

while(<HANDLE>) { $handle_contents .= $_; } 'hope this helps

If you are new to Tek-Tips, please use descriptive titles, check the FAQs, and beware the evil typo.

 

[theEclipse]

so what is concatenation?

is that just adding a string? Robert Carpenter
questions? comments? thanks? email me!
linkemapx@hotmail.com
Icq: 124408594

AIM & MSN: robacarp

 

[toolkit]

Exactly

$name = "Fred";

$foo  = "Hello";
$foo .= "there ";
$foo .= $name;

print "$foo\n";

Returns: Hello there Fred

Cheers, Neil

 

[theEclipse]

ok. let me understand this:

if you look at your post carefully, it would really return:

Hellothere Fred

Right? Robert Carpenter
questions? comments? thanks? email me!
linkemapx@hotmail.com
Icq: 124408594

AIM & MSN: robacarp

 

[Rieekan]

Correct. There is no space between Hello and there when this is placed into the variable $foo.

 

[toolkit]

You got me

 

[theEclipse]

Robert Carpenter
questions? comments? thanks? email me!
linkemapx@hotmail.com
Icq: 124408594

AIM & MSN: robacarp