Comments on: A Taste of Nested Classes, part 1 http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/ The neighbourhood of 7 Wed, 12 May 2010 16:29:09 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Charlie Wilson http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1746 Charlie Wilson Wed, 12 May 2010 16:29:09 +0000 http://blog.3plus4.org/?p=86#comment-1746 I always use Adobe illustrator at work because i work in an animation studio. this is really a serious tool for the graphic artist.-:, I always use Adobe illustrator at work because i work in an animation studio. this is really a serious tool for the graphic artist.-:,

]]> By: Marty http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1668 Marty Fri, 03 Apr 2009 23:29:29 +0000 http://blog.3plus4.org/?p=86#comment-1668 I understand that the 2 Asteroid metaobjects can be different. I'm not clear about WHY they need to be different, at least in this example. Couldn't the Asteroid method on Game arrange to always return the same meta-object? Thanks. I understand that the 2 Asteroid metaobjects can be different. I’m not clear about WHY they need to be different, at least in this example. Couldn’t the Asteroid method on Game arrange to always return the same meta-object?

Thanks.

]]> By: Vassili Bykov http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1549 Vassili Bykov Sun, 15 Feb 2009 21:19:50 +0000 http://blog.3plus4.org/?p=86#comment-1549 The program is Adobe Illustrator. However, keep in mind that it's a general-purpose drawing application, so I don't recommend it as a diagramming tool for everyone. The program is Adobe Illustrator. However, keep in mind that it’s a general-purpose drawing application, so I don’t recommend it as a diagramming tool for everyone.

]]> By: Gaboto http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1548 Gaboto Wed, 21 Jan 2009 16:34:39 +0000 http://blog.3plus4.org/?p=86#comment-1548 Hi Vassili Bykov, I always read your posts I really like it and newspeak. Congratulations! Can I ask you something that has nothing to do with it? What program do you use to make the UML drawings? they are really beautiful. (you can answer it to my mail if you prefer) Bye! Gabriel Hi Vassili Bykov, I always read your posts I really like it and newspeak. Congratulations!
Can I ask you something that has nothing to do with it? What program do you use to make the UML drawings? they are really beautiful.
(you can answer it to my mail if you prefer)
Bye!
Gabriel

]]> By: Peter William Lount http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1434 Peter William Lount Wed, 17 Dec 2008 14:15:20 +0000 http://blog.3plus4.org/?p=86#comment-1434 Forget the previous comment and this one, it was a firefox browser problem. Forget the previous comment and this one, it was a firefox browser problem.

]]> By: Peter William Lount http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1433 Peter William Lount Wed, 17 Dec 2008 14:13:42 +0000 http://blog.3plus4.org/?p=86#comment-1433 The correct link for the "dyla07-Gilad.pdf" paper is http://dyla2007.unibe.ch/?download=dyla07-Gilad.pdf. The correct link for the “dyla07-Gilad.pdf” paper is http://dyla2007.unibe.ch/?download=dyla07-Gilad.pdf.

]]> By: Paul Beckford http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1385 Paul Beckford Mon, 08 Dec 2008 23:29:56 +0000 http://blog.3plus4.org/?p=86#comment-1385 Hi Vassili, My last response isn't quite right either is it? I've re-read what you've said and I think I get it now. A bit difficult to explain, so I'll leave it to you in the next installment :) Cheers, Paul. Hi Vassili,

My last response isn’t quite right either is it? I’ve re-read what you’ve said and I think I get it now. A bit difficult to explain, so I’ll leave it to you in the next installment :)

Cheers,

Paul.

]]> By: Paul Beckford http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1383 Paul Beckford Mon, 08 Dec 2008 19:29:34 +0000 http://blog.3plus4.org/?p=86#comment-1383 Hi Vassili, I guess I didn't make my self very clear but you did answer my question. The "outer " is what I had in mind. I agree this isn't the same as a "lookup in the containing lexical scope", but it is an explicit reference to a specific lexical scope. I think I confused the two things in my question. Thanks Paul. Hi Vassili,

I guess I didn’t make my self very clear but you did answer my question. The “outer ” is what I had in mind. I agree this isn’t the same as a “lookup in the containing lexical scope”, but it is an explicit reference to a specific lexical scope. I think I confused the two things in my question.

Thanks Paul.

]]> By: Vassili Bykov http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1382 Vassili Bykov Mon, 08 Dec 2008 19:12:05 +0000 http://blog.3plus4.org/?p=86#comment-1382 Yes, or sort of, depending on what's your intent: lookup in containing lexical scope only, or unambiguous lookup in Game. To me the two mean slightly different things. The feature I haven't mentioned so far are outer sends. The syntax "outer <class-name>" fetches a reference to an enclosing instance of <class-name>. So, you could unambiguously invoke the game method in Game bypassing one in Asteroid by writing "outer Game game". However, this isn't quite what I would call lookup in the containing lexical scope. That would mean ignoring the receiver class and looking for a method in <em>any</em> of the containing classes. Here, we are fetching a reference to the game instance and then explicitly sending a message to it. No lexical lookup of the game message happens at all because it's not an implicit send. Yes, or sort of, depending on what’s your intent: lookup in containing lexical scope only, or unambiguous lookup in Game. To me the two mean slightly different things.

The feature I haven’t mentioned so far are outer sends. The syntax “outer <class-name>” fetches a reference to an enclosing instance of <class-name>. So, you could unambiguously invoke the game method in Game bypassing one in Asteroid by writing “outer Game game”. However, this isn’t quite what I would call lookup in the containing lexical scope. That would mean ignoring the receiver class and looking for a method in any of the containing classes. Here, we are fetching a reference to the game instance and then explicitly sending a message to it. No lexical lookup of the game message happens at all because it’s not an implicit send.

]]> By: Paul Beckford http://blog.3plus4.org/2008/12/04/a-taste-of-nested-classes-part-1/comment-page-1/#comment-1379 Paul Beckford Mon, 08 Dec 2008 17:56:57 +0000 http://blog.3plus4.org/?p=86#comment-1379 I love the idea, but I've got a question: OK. So if I explicitly specify self as the receiver then the method lookup will traverse the inheritance hierarchy as usual. If not it will look in my class first then proceed up the lexical scope. So what if I want to explicitly lookup a method in the containing lexical scope. Is this possible? For example if Asteriod had a game method too, how could I unambiguously lookup the game method in Game? Do I get a reference to the containing lexical scope for free? Cheers, Paul. Cheers Paul. I love the idea, but I’ve got a question:

OK. So if I explicitly specify self as the receiver then the method lookup will traverse the inheritance hierarchy as usual. If not it will look in my class first then proceed up the lexical scope.

So what if I want to explicitly lookup a method in the containing lexical scope. Is this possible? For example if Asteriod had a game method too, how could I unambiguously lookup the game method in Game? Do I get a reference to the containing lexical scope for free?

Cheers,

Paul.

Cheers Paul.

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