Self-interest May 2005

self-interest@lists.selflanguage.org

4 participants
6 discussions

Adding method slots dynamically
by oscar_lopez_p 16 Aug '05

16 Aug '05

Hello, How can I add dynamically a method slot to a self object? . I have: the method selector, the argument names and the body (source code) of a method, and I need (at runtime) to create a method from them and add it to an existing object. Thanks for the help, Oscar Lopez

3 3

Re: [self-interest] representation extension by data parents?
by J. Baltasar García Perez-Schofield 24 May '05

24 May '05

Hi ! > A third related feature not mentioned in this paper was also eliminated > at that time - slot privacy declarations. Actually the declarations > remained but the language now just ignores them. Why was this feature eliminated ? I've always wondered about the reason of this ... I suppose this completely avoids the use of encapsulation in Self ... Salud ! Baltasar -- PBC -- J. Baltasar García Perez-Schofield jbgarcia en uvigo de es http://webs.uvigo.es/jbgarcia/ Dep. Informática, Universidad de Vigo, España (Spain)

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representation extension by data parents?
by x19290 23 May '05

23 May '05

Hello. I am not a native English speaker so please be patient with my English. I read a paper "Organizing Programs Without Classes" and very much interested in "Figure 3. Representation extension in a classless language." So I wrote a program implementing the figure but It did not work because there seemed to be two paths to copy methods, one through traitsParent* and another through dataParent* How can I resolve this problem or what must I read? Thank you in advance.

2 1

Re: slot like "transporter = transporter"
by x19290 22 May '05

22 May '05

Yesterday, I posted an article 'slot like "transporter = transporter".' asking the meaning of such a slot and how to create such a slot. Today I found the answer myself. It was in "Prototype-Based Application Construction Using SELF 4.0." I can create such a slot by setting the creator path. Sorry for a noise.

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slot like "transporter = transporter"
by x19290 21 May '05

21 May '05

Hello. I am very new to Self. I browsed the globals and found a slot like "transporter = transporter." What does it mean? And I tried to add a slot like "x = x" to the globals then got an error "Lookup error, 'x' not found." How can I add a slot like "x = x?" Thank you in advance.

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[Announcement] Zero 2.0.5 published
by baltasarq 06 May '05

06 May '05

I send this message to this list because I think it could be of interest as Zero borrows some important properties from Self (such as the lack of classes). If you are not interested, please warn me. In the system's web page, http://trevinca.ei.uvigo.es/~jgarcia/TO/zero/ there are new packages for zero, the 2.0.5 version, this time for windows and for linux. However, the linux executables are dynamic ones. This means they are tied to libstdc++6-3.4.3. What's Zero ? ========= Zero is a simple, tiny object-oriented, prototype-based programming system which has been designed for education. Right now, the virtual machine, the assembler and the macroassembler are available. Installation ======= The install of Zero is very simple, and it doesn't affect the OS in which it lies: it is merely a matter of uncompressing the zip file in any new folder. Then, you should browse and follow the instructions in "readme.txt". In order to uninstall, you do only need to erase the folder. Web changes ============ The web page has been extended with the following sections: How to contribute, Standard's Library capabilities manual, and Examples. In the first web page it is explained that you can specially contribute to Zero if you are a lecturer and want to use Zero in any subject related to object technology. Other ways of helping specially include creating programs with Zero and eventually find bugs, which will make the virtual machine even more stable. Those programs sent to the contact address will be published in the section of Examples. Last but not least, The Standard's Library capabilities manual explore the basic capabilities of the VM and explains them with tiny examples. Aditions to Zero =========== Visual Zero -------------- The windows zip file includes Visual Zero, as usual since version 2.0.4: it is graphic user application able to show the execution of a Zero program step by step, like a debugger, as well as exploring the objects present in the system. It is a good tool for demonstrating system's work in the classroom, for example. Structural reflection ------------------------- Structural reflection is now available and complete, for attributes and methods. The compiler has been inserted into the virtual machine. Now it is possible to create and modify new methods in execution time. For this, you only need to use the inherited methods addMethod() and compilteToMethod(), which are explained in the web page in detail. Kind regards, Baltasar -- PBC -- J. Baltasar García Perez-Schofield jbgarcia en uvigo de es http://webs.uvigo.es/jbgarcia/ Dep. Informática, Universidad de Vigo, España (Spain)

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Self-interest May 2005