Hi.

Just thought that you (hopefully your teacher is already)should be aware there are some subtle bugs with the tie implementation.

Tie's FETCH called twice?
warning: tied vars may evaluate twice in logical expressions
warning: bug with tie (5.6.1)

But you ask why anyone would want to write a Tie? Well, outside of the many ties on CPAN and their usefullnes I would say the answer would in general be one of two reasons:

A) A programmer has a class whose behaviour conceptually is equivelent (or a superset) of the behaviour of a base type. So they decide to provide a Tie interface so that their users can stay within a familiar paradigm. Tie::IniFile

B) A programmer wants to intercept accesses to a base type to add some kind of extra processing. Tie::Refhash

C) The programmer wants to do something funky and unexpected Tie::Cycle

Yves / DeMerphq
---
Writing a good benchmark isnt as easy as it might look.

In reply to Re: Real world uses of the tie function. by demerphq
in thread Real world uses of the tie function. by Popcorn Dave

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