Learning Perl Objects, References, and Modules
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data accessing for instances selecting 2nd storing 2nd 3rd viewing with Data::Dumper 2nd viewing with debugger data structures looping and 2nd manipulating nested 2nd 3rd recursively defined references to anonymous references to subroutines Data::Dumper module 2nd 3rd daylight savings time (DST) dbmopen function debugging Changes file and enabling warnings during viewing complex data x command 2nd delegation dereferencing array references 2nd 3rd 4th coderefs 2nd hash references lexical variables and DESTROY method inheritance and 2nd nested objects purpose 2nd destructors class variables and IO::File objects and nested objects example direct object syntax 2nd directories represented as hashes separating with colon t files and dirname subroutine (File::Basename) distributions alternate installation locations announcing CPAN modules copyrights and licensing embedded documentation Exporter module h2xs tool make dist and 2nd Makefile.PL modules within POD format preparing 2nd qw( ) lists template files Test::More module Test::Simple module 2nd testing 2nd uploading to CPAN 2nd version numbers 2nd do operator documentation distribution considerations embedded for distribution testing and drop arrow rule Dumper subroutine
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