Calling functions in assignments

nipper

So I hit this issue every so often. I wanted to see if I am coding something incorrectly or if I just should continue to use my workaround.

I use Perl TPLs often and use $rootnode->value('foo'), but when I use something like

$output .= {
some HTML                     $rootnode->value('foo')
even more HTML
};

then I ostream $output

However when I code like this, instead of getting the value of foo, I get TeamSite::XMLnode=Array(0x0123456)->value('foo')
displayed on my page.

Then I kick myself and change the code to:

$foo = $rootnode->value('foo');
$output .= {
some HTML                     $foo
even more HTML
};

and it works.

So I am curious, should what I am trying work ? Do I need to quote it or parens or brackets or anything ? Or should I just try to remember the workaround ?

ISCBorisB

Haven't you missed qq in your sample?

$output .= qq{
some HTML
$rootnode->value('foo')
even more HTML
};

If 'yes' then you have to perform function calls separately. qq(Double quotes) interpolates variables
(hence "TeamSite::XMLnode..." and whatnot in place of $rootnode) and processes escape sequences. That's it.
It does not evaluate Perl expressions, function calls including.