[prog] perl interfaces

[Caroline Johnston]

Hi,

Has anyone had any experience of implementing interfaces or abstract 
classes in perl? I want to be able to define an interface and to get an 
error at compile time if implementations of that interface fail to define 
any of the required methods. Is there any recommended way of doing this? 
Googling turned up the interface.pm module, but it looks pretty new - has 
anyone used it? Any pitfalls I should know about? Any other solutions I 
ought to take a look at?

Many thanks,

Cass.