I am using HTML::Template with great success, but want to iterate through a huge number of template values as part of a form submission checker. Assigning the template variable values is lengthy and repetitive using the only method I know how. I have the template variables names and their required values in a hash, so wouldn't it be nice if I could just iterate through that and churn out the template variables?

So, is there a way to use a variable for all or part of the left hand side of the value pair assigmnent? Or another way to do the same thing?

# how I do it now
$tmpl->param(flag_location => "foo $var bar");

# I have not used hashes here to make it easier 
# to see the two things I am trying to do.

# how I want to do it
my $param = 'flag_location';
$tmpl->param($param => "foo $var bar");

# or better still
my $param = 'location';
$tmpl->param("flag_$param" => "foo $var bar");
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Also, what is the correct name for the values either side of the '=>' so I can refer to these things correctly in the future?

Evidently I'm a little confused as to the exact usage of this type of assignment and it's limitations, and can't find any good explanations of it anywhere thus far.