From: william robb <otherwill@...>
Date: 2006-07-11T12:17:32+09:00
Subject: Re: calling a method for an object in a .each block cont./ch

Thanks for the code.  I will have to digest the syntax a bit to see 
exactly
what you are doing here ... I had wondered what .freeze was good for.

On that other topic, I think it was around V5 that turbo pascal became 
OO.
The first version was what made Borland a success, as it was a dirt 
simple
implementation of a real programming language, with one of the first 
IDEs.  I still have the manual, complete, about the size of a paperback.

I do remember thinking, when I encountered Pascal's Record data type; "I 
wish I could store a procedure in one of these fields ..."  People at 
Borland must have
thought that too, eh?

Then came C, and Pascal kinda withered away ... Wasen't 'cool', but was 
a good workhorse.

Thanks again,

Will

>>> You could for example create individual classes for suit, face and
>>> maybe also for value implementing the enum pattern, so you end up
>>> having just a single instance for hearts, clubs, face_up, face_down
>>> etc.
> 
> # poor mans enum pattern,
> # for others see the RAA
> 
> Suit = Struct.new :name
> 
> class Suit
>    VALUES = [
>      HEARTS = new("Heart").freeze,
>      CLUBS = new("Clubs").freeze,
>      DIAMONDS = new("Diamonds").freeze,
>      SPADES = new("Spades").freeze,
>    ].freeze
[..etc...]

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