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#TodayIAchieved (well actually it was yesterday) a new Data::Checks constraint, that only accepts objects that implement an entire given set of method names. It's a decent step towards being able to define a "named interface" semantic.

#perl

metacpan.org/pod/Data::Checks#…

Screenshot of metacpan.org documentation: ## Can Can($methodname) Can($methodname1, $methodname2, ...) Since version 0.11. Accepts any blessed object reference to an instance in a class, or a class name directly, that has the all of the given method names (i.e. anything that passes a `->can` test on every name). To accept only object references and not package names, combine this check with `Object` by using the `All` combination: All(Object, Can($methodname, ...))

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#perl #todayiachieved

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