You should use the qr-operator:

my %config = (
  URI =>   { regex => qr/^$method\ssip:/, sub => \&request_line },
)

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see perldoc perlop

In reply to Re: How do i interpolate a variable in a regular expression? by reneeb
in thread How do i interpolate a variable in a regular expression? by sanjay nayak

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