Perl Modules

How to write Perl Modules Some practical advice about how to build a perl module March 21, 2003 – Stanford Linear Accelerator Center Fabrizio Coccetti

Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],Perl Module are easy to make and handy to use

What a Perl Module is ,[object Object],[object Object],[object Object],[object Object]

Why it is convenient to use PMs ,[object Object],[object Object],[object Object],[object Object],[object Object],Time saving technique !!

Before making a PM ,[object Object],[object Object],[object Object]

Let’s start to make a Perl Module ,[object Object],[object Object],[object Object],[object Object],$ h2xs -AX -n IEPM::PingER

What h2xs does for the developer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Some advice on writing the code of a PM ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How to use a PM in a Perl program ,[object Object],[object Object],[object Object],[object Object],use IEPM::PingER; $answer = ping_it (host.domain.edu);

Use Carp in Perl Modules ,[object Object],warn "No hostname given"; No hostname given at /usr/local/lib/perl5/site_perl/5.6/IEPM/PingER.pm line 143. carp "No hostname given"; No hostname given at perl_script.pl line 5. ,[object Object],use Carp; warn carp die croak

Example: the beginning of IEPM::PingER ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Example: the subroutine ping_it ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Preparing the package for shipping ,[object Object],[object Object],[object Object]

References ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Perl Modules

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Perl Modules