An idea that might or might not work, depending on how similar and consistent your "perl-strings" are:

my %dbhash = (
  name  => 'revdiablo',
  prize => 'pony',

);

my $template = 'Hello $dbhash{name}, you won a $dbhash{prize}.';

#$template =~ s/\$dbhash{([^}]+)}/$dbhash{$1}/ge; # unnecessary
$template =~ s/\$dbhash{([^}]+)}/$dbhash{$1}/g;

print "$template\n";

[download]

Update: of course, you might notice that this too uses eval. It just does it in a more constrained manner. I don't know how the difference in performance will work out, but I think it's much less dangerous in any event.

Another Update: aye, I just realized the /e is unnecessary, as the replacement part of a s/// is already interpolated as a double-quoted string. It can simply be s/\$dbhash{([^}]+)}/$dbhash{$1}/g.

In reply to Re: More Efficient Than Eval by revdiablo
in thread More Efficient Than Eval by geekondemand

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