[oak perl] Lexical vs. Package variables

[Jon Seidel, CMC]

Sandy...

A book that I found very useful when learning about OOP is
"Object-Oriented Programming" by Damian Conway. The introductory chapters
are very good, IMO, and then he goes into some very specific, detailed
implementations of OO, starting small and then moving up.

http://www.amazon.com/exec/obidos/ASIN/1884777791/104-6663660-8107124

However, he uses some very complicated (to me, anyway) constructs in the
later chapters that I really had to pore over... his indirection, for one
thing. Also, he uses at least one experimental feature that is no longer
in the language (a Perl 5 thing about "hashed arrays"... I can't recall
the precise name), so that's an issue.

But I think it's an excellent text that can get you as deep as you want.
It just may have more than you want at this point.

...jon

> It is a leap to "get" OOP... it's a fundamentally different way of
> looking at programming, as being a matter of passing messages among
> objects instead of passing data among procedures.
>
> "A Little Ruby, a Lot of Objects" at
>
> http://www.visibleworkings.com/little-ruby/
>
> is a pretty good introduction to thinking in these terms (it's
> Ruby-based, but it's more about OOP with Ruby for examples than about
> Ruby.)
>