The Lab

Here we plan to publish active content and essays related to our topics of study.

Development environments and studying tools.

Squeak - Open-source Smalltalk.

Smalltalk on the Web - Some choices for the Web.

Essays and proposals

Prisioner's Dilemma

The "Prisioner's Dilemma" is a well-known problem in the study of group evolution and the altruism as a mechanism for surviving.
To obtain more information about this topic it's recommended to read "The Selfish Gene" (Richard Dawkins, 1976) or search for "Prisioner's Dilemma" on the Internet.
On this page there is more information and even an implementation ported to various Smalltalks.

Other essays, tools, frameworks and studying material.

Framework for Genetic Algorithms in Squeak

This is a page devoted to the study of Genetic Algorithms using Squeak.

Factory Framework

This is a review essay for the phisical modelling of a factory.
Although it's just a draft, it's interesting for studying the modelling of a complex system that includes supplies and required materials for the fabrication of industrial products.
The version for VisualWorks NC 3.x is available for download (it also works in 5i). It's recommended to use it in conjunction with the Measurement Units Framework.
The framework is programmed in spanish, if you want it in english, just ask for it and we'll do our best effort to translate it as soon as possible.

Measurement Units Framework

This framework allows to [expresar] phisiochemical magnitudes in standard measurement units.
It pretends to fulfill the needed requisites to satisfy the International System of Units requirements and also a simple, flexible architecture, that can be extended at low-cost.
The version for VisualWorks NC 3.x is available for download (it also works in 5i).
The framework is programmed in spanish, if you want it in english, just ask for it and we'll do our best effort to translate it as soon as possible.

Framework for DOOM-like games

This is an implementation of a rendering native interface (for VisualSmalltalk 3.12 running on Windows) for DOOM-like games. It can be used as a device for displaying high quality and performance 3D virtual spaces, of simple programming.
It's easy to add actors with Smalltalk programmed behavior.
Every element of the space can be dinamically modified from Smalltalk, and the changes happen instantly.

Soler (demo version)

It is a demostration (with sources) of a product built during 1991 (6 month) by ObjectStyle.

It is a collaborative tool for learning to repair locomotive engines.


Atencion: La simulación solo funciona en modo de video de 256 colores debido a la técnica de animación utilizada.

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Book + Stamps Builder

A home made tool for building books from scanned pages. It has two programs: One writter in VisualSmalltalk 3.12 (requires VisualSmalltalk and ARSLLs) for aeasy and fast scanning and building books using Twain compatible scanners/devices (or for building digital photograph albums) Another program writter in Smalltalk/V to build stamps from scanned pages used by the first program to build indices with small stamp images.

CD-Guia Maps

A complete implementation of a product realized by Object Style during 1993-95.

A tool for building high quality maps a a low cost, supporting multimedial object layers and streets (see Map of Buenos Aires).
All the sources are included.

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If you need more information please send an email to info@here