From: Ilias Lazaridis <ilias@...>
Date: 2005-04-04T00:29:42+09:00
Subject: Re: [EVALUATION] - E03 - jamLang Evaluation Case Applied to Ruby

Saynatkari wrote:
> Le 3/4/2005, "Ilias Lazaridis" <ilias@lazaridis.com> a �crit:
>>Ilias Lazaridis wrote:
[...]

>>>I need to fill in the interactive session, to close this thread:
>>>
>>>http://lazaridis.com/case/lang/index.html#run_interactive
>>>
>>>http://lazaridis.com/case/lang/ruby.html#run_interactive
>>
>>I've tried this:
>>
>>open command window
>>change to project directory
>>cmd: irb
>>within irb
>>cmd: require 'talker'
>>
>>talker is created, produces output.
>>
>>but: the "talker" instance which was created during read in (of
>>talker.rb) has died.
>>
>>why?
> 
> Local variables evaluated during a require() are not accessible
> from outside the file; you may consider this such that the file
> is the scope within which the variable is defined, just like in
> a method body.

I understand.

instead of 'require', can I use another command, like e.g. "expand".

>>how do i read-in files, which produce instances, which 'survive'?
> 
> Global variables (although this practice would be discouraged),
> which are identified by a $-prefix, e.g. $global = 'something'.
> Come to think of it, constants may also be accessible.

ok

> Normally one will have either an accessor method of some sort
> or simply provide the means of _creating_ an instance.
> 
>>and: how do I delete an instance? [tried: del, delete, kill, rm, free]
> 
> One cannot explicitly delete an instance. It will be 'deleted'
> (marked for garbage collection) once it is without references.

how can i reverse the process?

I like to kill the object, thus the destructor is called.

the references will point to nil.

..

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