Use a dispatch table: 
my %dispatch = (
    A => \&unpack_a,
    B => \&unpack_b,
    C => \&unpack_c,
);
# ...
$dispatch{$RECORD_SEQ_ID}->($lines[$_]);

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In reply to Re: execute a string as a function by choroba
in thread execute a string as a function by fionbarr

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