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Trying to use a variable as a variable name (i.e. "symbolic references") is generally considered a bad idea.

There is an item in the perlfaq about this: How can I use a variable as a variable name?. I highly suggest you read this.

It is considered critical enough that it is explicitly detected and forbidden by use strict; - the inclusion of which is universally considered good practice.

Instead, use a hash variable:

my %tag_value; foreach ( @tagvalue ) { if ( /([\w,_]+):([0-9]+)/ ) { $tag_value{$1} = $2; } else { die "Failed to assign value to $1\n"; } }

By the way I think your die statement is going to have a problem, in that $1 will not be set (at least not to what you think) if it ever gets executed. If the pattern match (regex) fails to match, then none of the positional variables ($1, etc.) get set. Instead, you might say something like:

die "Failed to match tag/value in '$_'\n";
I reckon we are the only monastery ever to have a dungeon stuffed with 16,000 zombies.

In reply to Re: Variable scope headaches by jdporter
in thread Variable scope headaches by nikmit

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