You could do a lot worse than take a look at the IO::* modules by Graham Barr.

Of course, many of his modules have subsequently been maintained by other authors and so contain their influences also. Not always for the better.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Improving your skills by reading module sources by BrowserUk
in thread Improving your skills by reading module sources by unlinker

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