I think you're looking for anonymous subroutines.
A quick example:

# Compile some anonymous subroutine code in a variable
my $code='sub { print "A quick sample\n";}';
# Turn this into a reference to some executable code
my $subroutine=eval $code;
# Invoke the subroutine you just made
&$subroutine();
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This is just a quick example, hope it helps.

Malk