Lets your class/object say it works like something else

http://search.cpan.org/dist/asa

Perl 5 doesn't natively support Java-style interfaces, and it doesn't
support Perl 6 style roles either.
You can get both of these things in half a dozen different ways via
various CPAN modules, but they usually require that you buy into "their
way" of implementing your code.
Other have turned to "duck typing".
This is, for the most part, a fairly naive check that says "can you do
this method", under the "if it looks like a duck, and quacks like a duck,
then it must be a duck".

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Source Files
Filename Size Changed
asa-1.04.tar.gz 0000027573 26.9 KB over 1 year
cpanspec.yml 0000000669 669 Bytes over 1 year
perl-asa.changes 0000001213 1.18 KB over 1 year
perl-asa.spec 0000003570 3.49 KB over 1 year
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