Dear Monks,

i'm facing a Problem and i'm not able to google the answer. The Problem is that i'm even not sure about what to search..

Let me try to explain. I've a variable which contains another variable which value changes after it has been stored in the second variable.

E.g. 
my $a = '';
my $str = "Hello ".$a;
$a = 'Kevin';

print $str;

[download]
The expected output is

Hello Kevin

I'm not sure how to achieve this.

Thank you in advance.

### EDIT ####

It is only about readability.

I've created a Perl Package which delivers all default values for the Program context

Some of these values are relaing on variables which will be updated during runtime.

Like my $executable = "$homedir/bin/abc"; And $homedir will be found within the perl Code.

Of course i could move this variable into a subroutine and read it once $homedir has been set.

But in the same context there are variables which have been changed and i don't won't to overwrite them again.

The only solution i can think of is to split the static variables and the dynamic ones into different subroutines.

I thought there might be an option to evaluate the variable value when accessing it for the first time.

In reply to Evaluate variable while using by chickenman

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