But the culture that surrounds the play resulted in a large body of Perl is hard to understand legacy code:. Perl Perl Medic considered from the perspective of the programmer to see code written by others and try to answer the old question "What were they thinking?" This creative approach, and one that makes good reading for someone experienced in programming Perl (writer Peter Scott makes an analogy to be fluent in human languages, like French, then learn the various accents and dialects). Read this code directly through to your own repair using the index to help troubleshoot and improve what others have written the Wall. - David Topics covered: How to write good Perl code, Perl code to read the bad, and change bad into good Perl code in less time, which will be required to write the equivalent replacement program from scratch. Testing, debugging, documentation, replacing custom code with CPAN modules, and embrace the features that become available in later versions of Perl all closed.